15155561165 has 16 divisors (see below), whose sum is σ = 18242620416. Its totient is φ = 12087196800.

The previous prime is 15155561131. The next prime is 15155561219. The reversal of 15155561165 is 56116555151.

It is not a de Polignac number, because 15155561165 - 2⁶ = 15155561101 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 5672780 + ... + 5675450.

It is an arithmetic number, because the mean of its divisors is an integer number (1140163776).

Almost surely, 2^15155561165 is an apocalyptic number.

It is an amenable number.

15155561165 is a deficient number, since it is larger than the sum of its proper divisors (3087059251).

15155561165 is a wasteful number, since it uses less digits than its factorization.

15155561165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5740.

The product of its digits is 112500, while the sum is 41.

The spelling of 15155561165 in words is "fifteen billion, one hundred fifty-five million, five hundred sixty-one thousand, one hundred sixty-five".