16372504251 has 12 divisors (see below), whose sum is σ = 23680423312. Its totient is φ = 10900579536.

The previous prime is 16372504243. The next prime is 16372504273. The reversal of 16372504251 is 15240527361.

16372504251 is a `hidden beast` number, since 1 + 63 + 72 + 504 + 25 + 1 = 666.

It is not a de Polignac number, because 16372504251 - 2³ = 16372504243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16372504051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1194751 + ... + 1208376.

Almost surely, 2^16372504251 is an apocalyptic number.

16372504251 is a deficient number, since it is larger than the sum of its proper divisors (7307919061).

16372504251 is a wasteful number, since it uses less digits than its factorization.

16372504251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2403890 (or 2403887 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The spelling of 16372504251 in words is "sixteen billion, three hundred seventy-two million, five hundred four thousand, two hundred fifty-one".