16161531232 has 72 divisors (see below), whose sum is σ = 40377634920. Its totient is φ = 6296693760.

The previous prime is 16161531229. The next prime is 16161531241. The reversal of 16161531232 is 23213516161.

It is a super-2 number, since 2×16161531232² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16161531194 and 16161531203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 451257 + ... + 485752.

It is an arithmetic number, because the mean of its divisors is an integer number (560800485).

Almost surely, 2^16161531232 is an apocalyptic number.

It is an amenable number.

16161531232 is an abundant number, since it is smaller than the sum of its proper divisors (24216103688).

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

16161531232 is a wasteful number, since it uses less digits than its factorization.

16161531232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937044 (or 937029 counting only the distinct ones).

The product of its digits is 6480, while the sum is 31.

The spelling of 16161531232 in words is "sixteen billion, one hundred sixty-one million, five hundred thirty-one thousand, two hundred thirty-two".