16125571216 has 20 divisors (see below), whose sum is σ = 32601699072. Its totient is φ = 7712229536.

The previous prime is 16125571199. The next prime is 16125571223. The reversal of 16125571216 is 61217552161.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21909376 + ... + 21910111.

Almost surely, 2^16125571216 is an apocalyptic number.

16125571216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16125571216 is an abundant number, since it is smaller than the sum of its proper divisors (16476127856).

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

16125571216 is a wasteful number, since it uses less digits than its factorization.

16125571216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43819518 (or 43819512 counting only the distinct ones).

The product of its digits is 25200, while the sum is 37.

The spelling of 16125571216 in words is "sixteen billion, one hundred twenty-five million, five hundred seventy-one thousand, two hundred sixteen".