13021012623 has 12 divisors (see below), whose sum is σ = 18442681160. Its totient is φ = 8170046592.

The previous prime is 13021012597. The next prime is 13021012643. The reversal of 13021012623 is 32621012031.

It is not a de Polignac number, because 13021012623 - 2⁶ = 13021012559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13021012623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13021012643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7508368 + ... + 7510101.

Almost surely, 2^13021012623 is an apocalyptic number.

13021012623 is a deficient number, since it is larger than the sum of its proper divisors (5421668537).

13021012623 is a wasteful number, since it uses less digits than its factorization.

13021012623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15018506 (or 15018489 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 13021012623 its reverse (32621012031), we get a palindrome (45642024654).

The spelling of 13021012623 in words is "thirteen billion, twenty-one million, twelve thousand, six hundred twenty-three".