13626921028 has 48 divisors (see below), whose sum is σ = 27747529600. Its totient is φ = 5734644480.

The previous prime is 13626920981. The next prime is 13626921029. The reversal of 13626921028 is 82012962631.

It is not an unprimeable number, because it can be changed into a prime (13626921029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1050808 + ... + 1063696.

Almost surely, 2^13626921028 is an apocalyptic number.

It is an amenable number.

13626921028 is an abundant number, since it is smaller than the sum of its proper divisors (14120608572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13626921028 is a wasteful number, since it uses less digits than its factorization.

13626921028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13580 (or 13578 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 13626921028 in words is "thirteen billion, six hundred twenty-six million, nine hundred twenty-one thousand, twenty-eight".