15115402464 has 48 divisors (see below), whose sum is σ = 39915566208. Its totient is φ = 5008291712.

The previous prime is 15115402451. The next prime is 15115402483. The reversal of 15115402464 is 46420451151.

15115402464 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 455382 + ... + 487445.

It is an arithmetic number, because the mean of its divisors is an integer number (831574296).

Almost surely, 2^15115402464 is an apocalyptic number.

It is an amenable number.

15115402464 is an abundant number, since it is smaller than the sum of its proper divisors (24800163744).

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

15115402464 is a wasteful number, since it uses less digits than its factorization.

15115402464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943007 (or 942999 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The spelling of 15115402464 in words is "fifteen billion, one hundred fifteen million, four hundred two thousand, four hundred sixty-four".