156640733352 has 96 divisors (see below), whose sum is σ = 431350920000. Its totient is φ = 51341713920.

The previous prime is 156640733351. The next prime is 156640733363. The reversal of 156640733352 is 253337046651.

It is a happy number.

156640733352 is a `hidden beast` number, since 1 + 566 + 4 + 0 + 7 + 3 + 33 + 52 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 156640733298 and 156640733307.

It is not an unprimeable number, because it can be changed into a prime (156640733351) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1897024 + ... + 1977872.

It is an arithmetic number, because the mean of its divisors is an integer number (4493238750).

Almost surely, 2^156640733352 is an apocalyptic number.

156640733352 is a gapful number since it is divisible by the number (12) 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 156640733352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215675460000).

156640733352 is an abundant number, since it is smaller than the sum of its proper divisors (274710186648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

156640733352 is a wasteful number, since it uses less digits than its factorization.

156640733352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81311 (or 81304 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 45.

The spelling of 156640733352 in words is "one hundred fifty-six billion, six hundred forty million, seven hundred thirty-three thousand, three hundred fifty-two".