12890616784 has 20 divisors (see below), whose sum is σ = 25046333316. Its totient is φ = 6427046912.

The previous prime is 12890616779. The next prime is 12890616839. The reversal of 12890616784 is 48761609821.

It can be written as a sum of positive squares in 2 ways, for example, as 4035806784 + 8854810000 = 63528^2 + 94100^2 .

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, 1135519 + ... + 1146814.

Almost surely, 2^12890616784 is an apocalyptic number.

It is an amenable number.

12890616784 is a deficient number, since it is larger than the sum of its proper divisors (12155716532).

12890616784 is a wasteful number, since it uses less digits than its factorization.

12890616784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2282694 (or 2282688 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 52.

The spelling of 12890616784 in words is "twelve billion, eight hundred ninety million, six hundred sixteen thousand, seven hundred eighty-four".