13013220564 has 36 divisors (see below), whose sum is σ = 34112848224. Its totient is φ = 4337739864.

The previous prime is 13013220559. The next prime is 13013220589. The reversal of 13013220564 is 46502231031.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 6693072 + ... + 6695015.

Almost surely, 2^13013220564 is an apocalyptic number.

It is an amenable number.

13013220564 is an abundant number, since it is smaller than the sum of its proper divisors (21099627660).

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

13013220564 is a wasteful number, since it uses less digits than its factorization.

13013220564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13388106 (or 13388092 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 13013220564 its reverse (46502231031), we get a palindrome (59515451595).

The spelling of 13013220564 in words is "thirteen billion, thirteen million, two hundred twenty thousand, five hundred sixty-four".