16256937512 has 16 divisors (see below), whose sum is σ = 30612584340. Its totient is φ = 8093581696.

The previous prime is 16256937469. The next prime is 16256937539. The reversal of 16256937512 is 21573965261.

It can be written as a sum of positive squares in 2 ways, for example, as 14305595236 + 1951342276 = 119606^2 + 44174^2 .

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, 4358903 + ... + 4362630.

Almost surely, 2^16256937512 is an apocalyptic number.

It is an amenable number.

16256937512 is a deficient number, since it is larger than the sum of its proper divisors (14355646828).

16256937512 is a wasteful number, since it uses less digits than its factorization.

16256937512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8721772 (or 8721768 counting only the distinct ones).

The product of its digits is 680400, while the sum is 47.

The spelling of 16256937512 in words is "sixteen billion, two hundred fifty-six million, nine hundred thirty-seven thousand, five hundred twelve".