12509874720 has 144 divisors (see below), whose sum is σ = 48788550720. Its totient is φ = 2859397632.

The previous prime is 12509874701. The next prime is 12509874743. The reversal of 12509874720 is 2747890521.

It is a happy number.

12509874720 is a `hidden beast` number, since 1 + 2 + 509 + 8 + 74 + 72 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 610450 + ... + 630609.

It is an arithmetic number, because the mean of its divisors is an integer number (338809380).

Almost surely, 2^12509874720 is an apocalyptic number.

12509874720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12509874720 is an abundant number, since it is smaller than the sum of its proper divisors (36278676000).

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

12509874720 is a wasteful number, since it uses less digits than its factorization.

12509874720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241087 (or 1241076 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The spelling of 12509874720 in words is "twelve billion, five hundred nine million, eight hundred seventy-four thousand, seven hundred twenty".