15855481392 has 80 divisors (see below), whose sum is σ = 44016861312. Its totient is φ = 4900008960.

The previous prime is 15855481381. The next prime is 15855481429. The reversal of 15855481392 is 29318455851.

It is a Harshad number since it is a multiple of its sum of digits (51).

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, 90334 + ... + 199677.

Almost surely, 2^15855481392 is an apocalyptic number.

15855481392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15855481392 is an abundant number, since it is smaller than the sum of its proper divisors (28161379920).

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

15855481392 is a wasteful number, since it uses less digits than its factorization.

15855481392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290106 (or 290100 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 51.

The spelling of 15855481392 in words is "fifteen billion, eight hundred fifty-five million, four hundred eighty-one thousand, three hundred ninety-two".