15964907540 has 24 divisors (see below), whose sum is σ = 33529984992. Its totient is φ = 6385262240.

The previous prime is 15964907531. The next prime is 15964907573. The reversal of 15964907540 is 4570946951.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167987 + ... + 245253.

It is an arithmetic number, because the mean of its divisors is an integer number (1397082708).

Almost surely, 2^15964907540 is an apocalyptic number.

15964907540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15964907540 is an abundant number, since it is smaller than the sum of its proper divisors (17565077452).

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

15964907540 is a wasteful number, since it uses less digits than its factorization.

15964907540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87607 (or 87605 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 50.

The spelling of 15964907540 in words is "fifteen billion, nine hundred sixty-four million, nine hundred seven thousand, five hundred forty".