15551131154 has 32 divisors (see below), whose sum is σ = 25826631600. Its totient is φ = 6976253952.

The previous prime is 15551131139. The next prime is 15551131177. The reversal of 15551131154 is 45113115551.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 10065506929 + 5485624225 = 100327^2 + 74065^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 15551131154.

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, 985922 + ... + 1001570.

Almost surely, 2^15551131154 is an apocalyptic number.

15551131154 is a deficient number, since it is larger than the sum of its proper divisors (10275500446).

15551131154 is a wasteful number, since it uses less digits than its factorization.

15551131154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16734.

The product of its digits is 7500, while the sum is 32.

The spelling of 15551131154 in words is "fifteen billion, five hundred fifty-one million, one hundred thirty-one thousand, one hundred fifty-four".