12487526644 has 12 divisors (see below), whose sum is σ = 21853988100. Its totient is φ = 6243530048.

The previous prime is 12487526629. The next prime is 12487526687. The reversal of 12487526644 is 44662578421.

It can be written as a sum of positive squares in 2 ways, for example, as 5566950544 + 6920576100 = 74612^2 + 83190^2 .

It is a congruent number.

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, 128922 + ... + 203950.

It is an arithmetic number, because the mean of its divisors is an integer number (1821165675).

Almost surely, 2^12487526644 is an apocalyptic number.

It is an amenable number.

12487526644 is a deficient number, since it is larger than the sum of its proper divisors (9366461456).

12487526644 is a wasteful number, since it uses less digits than its factorization.

12487526644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116642 (or 116640 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 49.

The spelling of 12487526644 in words is "twelve billion, four hundred eighty-seven million, five hundred twenty-six thousand, six hundred forty-four".