166560000555165 has 64 divisors (see below), whose sum is σ = 314397130309632. Its totient is φ = 73684232985600.

The previous prime is 166560000555161. The next prime is 166560000555173. The reversal of 166560000555165 is 561555000065661.

It is not a de Polignac number, because 166560000555165 - 2² = 166560000555161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166560000555161) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 197884405 + ... + 198724325.

It is an arithmetic number, because the mean of its divisors is an integer number (4912455161088).

Almost surely, 2^{166560000555165} is an apocalyptic number.

166560000555165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166560000555165 is a deficient number, since it is larger than the sum of its proper divisors (147837129754467).

166560000555165 is a wasteful number, since it uses less digits than its factorization.

166560000555165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900890.

The product of its (nonzero) digits is 4050000, while the sum is 51.

The spelling of 166560000555165 in words is "one hundred sixty-six trillion, five hundred sixty billion, five hundred fifty-five thousand, one hundred sixty-five".