165045252561634 has 64 divisors (see below), whose sum is σ = 281238774865920. Its totient is φ = 72229055184000.

The previous prime is 165045252561619. The next prime is 165045252561641. The reversal of 165045252561634 is 436165252540561.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8269929 + ... + 19962019.

It is an arithmetic number, because the mean of its divisors is an integer number (4394355857280).

Almost surely, 2^{165045252561634} is an apocalyptic number.

165045252561634 is a deficient number, since it is larger than the sum of its proper divisors (116193522304286).

165045252561634 is a wasteful number, since it uses less digits than its factorization.

165045252561634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11692687.

The product of its (nonzero) digits is 25920000, while the sum is 55.

The spelling of 165045252561634 in words is "one hundred sixty-five trillion, forty-five billion, two hundred fifty-two million, five hundred sixty-one thousand, six hundred thirty-four".