| Base | Representation |
|---|---|
| bin | 100100101010011010110110… |
| … | …111011101111110101111000 |
| 3 | 210010220211211120022210002011 |
| 4 | 210222122312323233311320 |
| 5 | 132113313202210422300 |
| 6 | 1330534450145415304 |
| 7 | 45651355521131302 |
| oct | 4452326673576570 |
| 9 | 703824746283064 |
| 10 | 161244731342200 |
| 11 | 47417563223880 |
| 12 | 1610238633a534 |
| 13 | 6bc840b64734c |
| 14 | 2bb640276a972 |
| 15 | 139952b0cdeba |
| hex | 92a6b6eefd78 |
161244731342200 has 192 divisors, whose sum is σ = 433628358508800. Its totient is φ = 55109444966400.
The previous prime is 161244731342143. The next prime is 161244731342267. The reversal of 161244731342200 is 2243137442161.
161244731342200 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a Harshad number since it is a multiple of its sum of digits (40).
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (29) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24224631 + ... + 30154969.
It is an arithmetic number, because the mean of its divisors is an integer number (2258481033900).
Almost surely, 2161244731342200 is an apocalyptic number.
161244731342200 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 161244731342200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216814179254400).
161244731342200 is an abundant number, since it is smaller than the sum of its proper divisors (272383627166600).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
161244731342200 is a wasteful number, since it uses less digits than its factorization.
161244731342200 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5931110 (or 5931101 counting only the distinct ones).
The product of its (nonzero) digits is 193536, while the sum is 40.
Adding to 161244731342200 its reverse (2243137442161), we get a palindrome (163487868784361).
The spelling of 161244731342200 in words is "one hundred sixty-one trillion, two hundred forty-four billion, seven hundred thirty-one million, three hundred forty-two thousand, two hundred".
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