13005515045864 has 32 divisors (see below), whose sum is σ = 26612593999200. Its totient is φ = 5909285718720.

The previous prime is 13005515045863. The next prime is 13005515045867. The reversal of 13005515045864 is 46854051550031.

It is not an unprimeable number, because it can be changed into a prime (13005515045863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28674074 + ... + 29124105.

It is an arithmetic number, because the mean of its divisors is an integer number (831643562475).

Almost surely, 2^{13005515045864} is an apocalyptic number.

It is an amenable number.

13005515045864 is an abundant number, since it is smaller than the sum of its proper divisors (13607078953336).

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

13005515045864 is a wasteful number, since it uses less digits than its factorization.

13005515045864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57800753 (or 57800749 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 47.

Adding to 13005515045864 its reverse (46854051550031), we get a palindrome (59859566595895).

The spelling of 13005515045864 in words is "thirteen trillion, five billion, five hundred fifteen million, forty-five thousand, eight hundred sixty-four".