15166501655 has 4 divisors (see below), whose sum is σ = 18199801992. Its totient is φ = 12133201320.

The previous prime is 15166501631. The next prime is 15166501673. The reversal of 15166501655 is 55610566151.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 15166501655 - 2¹⁶ = 15166436119 is a prime.

It is a super-2 number, since 2×15166501655² (a number of 21 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 1516650161 + ... + 1516650170.

It is an arithmetic number, because the mean of its divisors is an integer number (4549950498).

Almost surely, 2^15166501655 is an apocalyptic number.

15166501655 is a deficient number, since it is larger than the sum of its proper divisors (3033300337).

15166501655 is an equidigital number, since it uses as much as digits as its factorization.

15166501655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3033300336.

The product of its (nonzero) digits is 135000, while the sum is 41.

The spelling of 15166501655 in words is "fifteen billion, one hundred sixty-six million, five hundred one thousand, six hundred fifty-five".