161037525120 has 64 divisors (see below), whose sum is σ = 513307117440. Its totient is φ = 42943339520.

The previous prime is 161037525119. The next prime is 161037525127. The reversal of 161037525120 is 21525730161.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (161037525127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41934936 + ... + 41938775.

It is an arithmetic number, because the mean of its divisors is an integer number (8020423710).

Almost surely, 2^161037525120 is an apocalyptic number.

161037525120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161037525120 is an abundant number, since it is smaller than the sum of its proper divisors (352269592320).

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

161037525120 is an equidigital number, since it uses as much as digits as its factorization.

161037525120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83873733 (or 83873721 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 33.

The spelling of 161037525120 in words is "one hundred sixty-one billion, thirty-seven million, five hundred twenty-five thousand, one hundred twenty".