12658995028 has 12 divisors (see below), whose sum is σ = 22183469140. Its totient is φ = 6320860992.

The previous prime is 12658995023. The next prime is 12658995029. The reversal of 12658995028 is 82059985621.

It can be written as a sum of positive squares in 2 ways, for example, as 12525638724 + 133356304 = 111918^2 + 11548^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12658995028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12658995023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2155833 + ... + 2161696.

Almost surely, 2^12658995028 is an apocalyptic number.

It is an amenable number.

12658995028 is a deficient number, since it is larger than the sum of its proper divisors (9524474112).

12658995028 is a wasteful number, since it uses less digits than its factorization.

12658995028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4318266 (or 4318264 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 55.

The spelling of 12658995028 in words is "twelve billion, six hundred fifty-eight million, nine hundred ninety-five thousand, twenty-eight".