15813980512 has 48 divisors (see below), whose sum is σ = 34539825600. Its totient is φ = 7066330240.

The previous prime is 15813980509. The next prime is 15813980521. The reversal of 15813980512 is 21508931851.

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, 359962 + ... + 401497.

It is an arithmetic number, because the mean of its divisors is an integer number (719579700).

Almost surely, 2^15813980512 is an apocalyptic number.

It is an amenable number.

15813980512 is an abundant number, since it is smaller than the sum of its proper divisors (18725845088).

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

15813980512 is a wasteful number, since it uses less digits than its factorization.

15813980512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761539 (or 761531 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 43.

The spelling of 15813980512 in words is "fifteen billion, eight hundred thirteen million, nine hundred eighty thousand, five hundred twelve".