12890262788 has 24 divisors (see below), whose sum is σ = 24299143512. Its totient is φ = 5947893504.

The previous prime is 12890262743. The next prime is 12890262811. The reversal of 12890262788 is 88726209821.

It can be written as a sum of positive squares in 4 ways, for example, as 240312004 + 12649950784 = 15502^2 + 112472^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200456 + ... + 256832.

It is an arithmetic number, because the mean of its divisors is an integer number (1012464313).

Almost surely, 2^12890262788 is an apocalyptic number.

It is an amenable number.

12890262788 is a deficient number, since it is larger than the sum of its proper divisors (11408880724).

12890262788 is a wasteful number, since it uses less digits than its factorization.

12890262788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60791 (or 60789 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 53.

The spelling of 12890262788 in words is "twelve billion, eight hundred ninety million, two hundred sixty-two thousand, seven hundred eighty-eight".