165641314254 has 32 divisors (see below), whose sum is σ = 364356679680. Its totient is φ = 49882162272.

The previous prime is 165641314243. The next prime is 165641314273. The reversal of 165641314254 is 452413146561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22587894 + ... + 22595225.

It is an arithmetic number, because the mean of its divisors is an integer number (11386146240).

Almost surely, 2^165641314254 is an apocalyptic number.

165641314254 is an abundant number, since it is smaller than the sum of its proper divisors (198715365426).

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

165641314254 is a wasteful number, since it uses less digits than its factorization.

165641314254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45183184.

The product of its digits is 345600, while the sum is 42.

The spelling of 165641314254 in words is "one hundred sixty-five billion, six hundred forty-one million, three hundred fourteen thousand, two hundred fifty-four".