| Base | Representation |
|---|---|
| bin | 100011010001011101001101… |
| … | …100000111010111110000000 |
| 3 | 202100021101210202011000000210 |
| 4 | 203101131031200322332000 |
| 5 | 130313132221401140000 |
| 6 | 1305534144531314120 |
| 7 | 44450601232146651 |
| oct | 4321351540727600 |
| 9 | 670241722130023 |
| 10 | 155131224240000 |
| 11 | 4547a867903548 |
| 12 | 1549557914b940 |
| 13 | 6873a72335468 |
| 14 | 2a44569aab528 |
| 15 | 12e04bc1dc350 |
| hex | 8d174d83af80 |
155131224240000 has 640 divisors, whose sum is σ = 549858988800000. Its totient is φ = 38653332480000.
The previous prime is 155131224239987. The next prime is 155131224240001. The reversal of 155131224240000 is 42422131551.
It is a tau number, because it is divible by the number of its divisors (640).
It is a Harshad number since it is a multiple of its sum of digits (30).
It is a self number, because there is not a number n which added to its sum of digits gives 155131224240000.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (155131224240001) by changing a digit.
It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 215400501 + ... + 216119499.
It is an arithmetic number, because the mean of its divisors is an integer number (859154670000).
Almost surely, 2155131224240000 is an apocalyptic number.
155131224240000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 155131224240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274929494400000).
155131224240000 is an abundant number, since it is smaller than the sum of its proper divisors (394727764560000).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
155131224240000 is an equidigital number, since it uses as much as digits as its factorization.
155131224240000 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 719096 (or 719069 counting only the distinct ones).
The product of its (nonzero) digits is 9600, while the sum is 30.
Adding to 155131224240000 its reverse (42422131551), we get a palindrome (155173646371551).
The spelling of 155131224240000 in words is "one hundred fifty-five trillion, one hundred thirty-one billion, two hundred twenty-four million, two hundred forty thousand".
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