| Base | Representation |
|---|---|
| bin | 111001010100101100… |
| … | …010110010111100000 |
| 3 | 12212212120001001010100 |
| 4 | 321110230112113200 |
| 5 | 2002023404013430 |
| 6 | 44135331502400 |
| 7 | 4306164141312 |
| oct | 712454262740 |
| 9 | 185776031110 |
| 10 | 61550454240 |
| 11 | 24115699300 |
| 12 | bb19157a00 |
| 13 | 5a5ba36532 |
| 14 | 2d9c76b7b2 |
| 15 | 1903916960 |
| hex | e54b165e0 |
61550454240 has 432 divisors, whose sum is σ = 234696728448. Its totient is φ = 14674176000.
The previous prime is 61550454221. The next prime is 61550454247. The reversal of 61550454240 is 4245405516.
61550454240 is a `hidden beast` number, since 61 + 5 + 50 + 4 + 542 + 4 + 0 = 666.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a junction number, because it is equal to n+sod(n) for n = 61550454195 and 61550454204.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (61550454247) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 10625745 + ... + 10631535.
It is an arithmetic number, because the mean of its divisors is an integer number (543279464).
Almost surely, 261550454240 is an apocalyptic number.
61550454240 is a gapful number since it is divisible by the number (60) 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 61550454240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117348364224).
61550454240 is an abundant number, since it is smaller than the sum of its proper divisors (173146274208).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
61550454240 is a wasteful number, since it uses less digits than its factorization.
61550454240 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5895 (or 5873 counting only the distinct ones).
The product of its (nonzero) digits is 96000, while the sum is 36.
Adding to 61550454240 its reverse (4245405516), we get a palindrome (65795859756).
The spelling of 61550454240 in words is "sixty-one billion, five hundred fifty million, four hundred fifty-four thousand, two hundred forty".
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