15881000551 has 12 divisors (see below), whose sum is σ = 18167835112. Its totient is φ = 13797065088.

The previous prime is 15881000537. The next prime is 15881000579. The reversal of 15881000551 is 15500018851.

It is not a de Polignac number, because 15881000551 - 2⁵ = 15881000519 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15881000521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2109765 + ... + 2117278.

Almost surely, 2^15881000551 is an apocalyptic number.

15881000551 is a deficient number, since it is larger than the sum of its proper divisors (2286834561).

15881000551 is a wasteful number, since it uses less digits than its factorization.

15881000551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4227090 (or 4227073 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 34.

The spelling of 15881000551 in words is "fifteen billion, eight hundred eighty-one million, five hundred fifty-one", and thus it is an aban number.