15121109464 has 64 divisors (see below), whose sum is σ = 29040560640. Its totient is φ = 7379904000.

The previous prime is 15121109453. The next prime is 15121109491. The reversal of 15121109464 is 46490112151.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23370789 + ... + 23371435.

It is an arithmetic number, because the mean of its divisors is an integer number (453758760).

Almost surely, 2^15121109464 is an apocalyptic number.

It is an amenable number.

15121109464 is a deficient number, since it is larger than the sum of its proper divisors (13919451176).

15121109464 is a wasteful number, since it uses less digits than its factorization.

15121109464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120 (or 1116 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The spelling of 15121109464 in words is "fifteen billion, one hundred twenty-one million, one hundred nine thousand, four hundred sixty-four".