15993276940 has 24 divisors (see below), whose sum is σ = 33600791952. Its totient is φ = 6394470720.

The previous prime is 15993276913. The next prime is 15993276953. The reversal of 15993276940 is 4967239951.

It is a happy 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, 131031 + ... + 221710.

It is an arithmetic number, because the mean of its divisors is an integer number (1400032998).

Almost surely, 2^15993276940 is an apocalyptic number.

15993276940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15993276940 is an abundant number, since it is smaller than the sum of its proper divisors (17607515012).

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

15993276940 is a wasteful number, since it uses less digits than its factorization.

15993276940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355017 (or 355015 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 55.

The spelling of 15993276940 in words is "fifteen billion, nine hundred ninety-three million, two hundred seventy-six thousand, nine hundred forty".