15550656165 has 24 divisors (see below), whose sum is σ = 29404878048. Its totient is φ = 7539711840.

The previous prime is 15550656161. The next prime is 15550656179. The reversal of 15550656165 is 56165605551.

It is not a de Polignac number, because 15550656165 - 2² = 15550656161 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 15550656165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15550656161) 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 23 ways as a sum of consecutive naturals, for example, 15707239 + ... + 15708228.

It is an arithmetic number, because the mean of its divisors is an integer number (1225203252).

Almost surely, 2^15550656165 is an apocalyptic number.

15550656165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15550656165 is a deficient number, since it is larger than the sum of its proper divisors (13854221883).

15550656165 is a wasteful number, since it uses less digits than its factorization.

15550656165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31415489 (or 31415486 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 45.

The spelling of 15550656165 in words is "fifteen billion, five hundred fifty million, six hundred fifty-six thousand, one hundred sixty-five".