12642574984 has 64 divisors (see below), whose sum is σ = 25743841200. Its totient is φ = 5820392448.

The previous prime is 12642574951. The next prime is 12642574991. The reversal of 12642574984 is 48947524621.

It can be written as a sum of positive squares in 8 ways, for example, as 2161320100 + 10481254884 = 46490^2 + 102378^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10421962 + ... + 10423174.

Almost surely, 2^12642574984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12642574984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12871920600).

12642574984 is an abundant number, since it is smaller than the sum of its proper divisors (13101266216).

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

12642574984 is a wasteful number, since it uses less digits than its factorization.

12642574984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851 (or 1821 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 52.

The spelling of 12642574984 in words is "twelve billion, six hundred forty-two million, five hundred seventy-four thousand, nine hundred eighty-four".