15215063664 has 20 divisors (see below), whose sum is σ = 39305581256. Its totient is φ = 5071687872.

The previous prime is 15215063659. The next prime is 15215063671. The reversal of 15215063664 is 46636051251.

15215063664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3 ways as a sum of consecutive naturals, for example, 158490199 + ... + 158490294.

Almost surely, 2^15215063664 is an apocalyptic number.

It is an amenable number.

15215063664 is an abundant number, since it is smaller than the sum of its proper divisors (24090517592).

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

15215063664 is a wasteful number, since it uses less digits than its factorization.

15215063664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316980504 (or 316980498 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 15215063664 in words is "fifteen billion, two hundred fifteen million, sixty-three thousand, six hundred sixty-four".