12638752515028 has 24 divisors (see below), whose sum is σ = 22136444933120. Its totient is φ = 6314056207200.

The previous prime is 12638752514963. The next prime is 12638752515031. The reversal of 12638752515028 is 82051525783621.

It is a super-2 number, since 2×12638752515028² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12638752515028.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22439053 + ... + 22995403.

Almost surely, 2^{12638752515028} is an apocalyptic number.

It is an amenable number.

12638752515028 is a deficient number, since it is larger than the sum of its proper divisors (9497692418092).

12638752515028 is a wasteful number, since it uses less digits than its factorization.

12638752515028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561127 (or 561125 counting only the distinct ones).

The product of its (nonzero) digits is 8064000, while the sum is 55.

The spelling of 12638752515028 in words is "twelve trillion, six hundred thirty-eight billion, seven hundred fifty-two million, five hundred fifteen thousand, twenty-eight".