15855460803 has 128 divisors (see below), whose sum is σ = 31757107200. Its totient is φ = 7578147456.

The previous prime is 15855460799. The next prime is 15855460813. The reversal of 15855460803 is 30806455851.

15855460803 is a `hidden beast` number, since 1 + 585 + 5 + 4 + 60 + 8 + 0 + 3 = 666.

It is not a de Polignac number, because 15855460803 - 2² = 15855460799 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15855460813) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1066326 + ... + 1081092.

It is an arithmetic number, because the mean of its divisors is an integer number (248102400).

Almost surely, 2^15855460803 is an apocalyptic number.

15855460803 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

15855460803 is an abundant number, since it is smaller than the sum of its proper divisors (15901646397).

15855460803 is a wasteful number, since it uses less digits than its factorization.

15855460803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14838 (or 14832 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 45.

The spelling of 15855460803 in words is "fifteen billion, eight hundred fifty-five million, four hundred sixty thousand, eight hundred three".