165500050555 has 32 divisors (see below), whose sum is σ = 240258585600. Its totient is φ = 107024222592.

The previous prime is 165500050553. The next prime is 165500050591. The reversal of 165500050555 is 555050005561.

It is not a de Polignac number, because 165500050555 - 2¹ = 165500050553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165500050553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1852335 + ... + 1939624.

It is an arithmetic number, because the mean of its divisors is an integer number (7508080800).

Almost surely, 2^165500050555 is an apocalyptic number.

165500050555 is a deficient number, since it is larger than the sum of its proper divisors (74758535045).

165500050555 is a wasteful number, since it uses less digits than its factorization.

165500050555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3792043.

The product of its (nonzero) digits is 93750, while the sum is 37.

The spelling of 165500050555 in words is "one hundred sixty-five billion, five hundred million, fifty thousand, five hundred fifty-five".