165167508378 has 32 divisors (see below), whose sum is σ = 341118360000. Its totient is φ = 53282105856.

The previous prime is 165167508353. The next prime is 165167508397. The reversal of 165167508378 is 873805761561.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2908503 + ... + 2964746.

It is an arithmetic number, because the mean of its divisors is an integer number (10659948750).

Almost surely, 2^165167508378 is an apocalyptic number.

165167508378 is an abundant number, since it is smaller than the sum of its proper divisors (175950851622).

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

165167508378 is a wasteful number, since it uses less digits than its factorization.

165167508378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5873406.

The product of its (nonzero) digits is 8467200, while the sum is 57.

The spelling of 165167508378 in words is "one hundred sixty-five billion, one hundred sixty-seven million, five hundred eight thousand, three hundred seventy-eight".