12504311892 has 36 divisors (see below), whose sum is σ = 31627348116. Its totient is φ = 4165568640.

The previous prime is 12504311881. The next prime is 12504311909. The reversal of 12504311892 is 29811340521.

12504311892 is a `hidden beast` number, since 1 + 250 + 4 + 311 + 8 + 92 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6400640016 + 6103671876 = 80004^2 + 78126^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 45159 + ... + 164462.

Almost surely, 2^12504311892 is an apocalyptic number.

12504311892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12504311892 is an abundant number, since it is smaller than the sum of its proper divisors (19123036224).

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

12504311892 is a wasteful number, since it uses less digits than its factorization.

12504311892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211288 (or 211283 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The spelling of 12504311892 in words is "twelve billion, five hundred four million, three hundred eleven thousand, eight hundred ninety-two".