12620696128 has 28 divisors (see below), whose sum is σ = 25057691820. Its totient is φ = 6306947072.

The previous prime is 12620696111. The next prime is 12620696131. The reversal of 12620696128 is 82169602621.

It can be written as a sum of positive squares in 2 ways, for example, as 10459561984 + 2161134144 = 102272^2 + 46488^2 .

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, 68700 + ... + 173092.

It is an arithmetic number, because the mean of its divisors is an integer number (894917565).

Almost surely, 2^12620696128 is an apocalyptic number.

It is an amenable number.

12620696128 is a deficient number, since it is larger than the sum of its proper divisors (12436995692).

12620696128 is a wasteful number, since it uses less digits than its factorization.

12620696128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106294 (or 106284 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 12620696128 in words is "twelve billion, six hundred twenty million, six hundred ninety-six thousand, one hundred twenty-eight".