165771152000 has 64 divisors (see below), whose sum is σ = 412148566440. Its totient is φ = 66308454400.

The previous prime is 165771151999. The next prime is 165771152047. The reversal of 165771152000 is 251177561.

It can be written as a sum of positive squares in 4 ways, for example, as 101007009856 + 64764142144 = 317816^2 + 254488^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5164349 + ... + 5196348.

Almost surely, 2^165771152000 is an apocalyptic number.

165771152000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165771152000 is an abundant number, since it is smaller than the sum of its proper divisors (246377414440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165771152000 is an equidigital number, since it uses as much as digits as its factorization.

165771152000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10360726 (or 10360704 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 35.

The spelling of 165771152000 in words is "one hundred sixty-five billion, seven hundred seventy-one million, one hundred fifty-two thousand".