16156431204 has 24 divisors (see below), whose sum is σ = 37877010528. Its totient is φ = 5359952640.

The previous prime is 16156431197. The next prime is 16156431223. The reversal of 16156431204 is 40213465161.

It is a super-2 number, since 2×16156431204² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3187917 + ... + 3192980.

It is an arithmetic number, because the mean of its divisors is an integer number (1578208772).

Almost surely, 2^16156431204 is an apocalyptic number.

It is an amenable number.

16156431204 is an abundant number, since it is smaller than the sum of its proper divisors (21720579324).

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

16156431204 is a wasteful number, since it uses less digits than its factorization.

16156431204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6381115 (or 6381113 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

Adding to 16156431204 its reverse (40213465161), we get a palindrome (56369896365).

The spelling of 16156431204 in words is "sixteen billion, one hundred fifty-six million, four hundred thirty-one thousand, two hundred four".