13000138672 has 20 divisors (see below), whose sum is σ = 26000278336. Its totient is φ = 6290389440.

The previous prime is 13000138639. The next prime is 13000138709. The reversal of 13000138672 is 27683100031.

13000138672 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13104483 + ... + 13105474.

Almost surely, 2^13000138672 is an apocalyptic number.

It is an amenable number.

13000138672 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

13000138672 is a wasteful number, since it uses less digits than its factorization.

13000138672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26209996 (or 26209990 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The spelling of 13000138672 in words is "thirteen billion, one hundred thirty-eight thousand, six hundred seventy-two".