165145644450264 has 64 divisors (see below), whose sum is σ = 420768638553600. Its totient is φ = 53998641518976.

The previous prime is 165145644450251. The next prime is 165145644450287. The reversal of 165145644450264 is 462054446541561.

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, 125292859 + ... + 126604074.

It is an arithmetic number, because the mean of its divisors is an integer number (6574509977400).

Almost surely, 2^{165145644450264} is an apocalyptic number.

It is an amenable number.

165145644450264 is an abundant number, since it is smaller than the sum of its proper divisors (255622994103336).

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

165145644450264 is a wasteful number, since it uses less digits than its factorization.

165145644450264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251897464 (or 251897460 counting only the distinct ones).

The product of its (nonzero) digits is 55296000, while the sum is 57.

The spelling of 165145644450264 in words is "one hundred sixty-five trillion, one hundred forty-five billion, six hundred forty-four million, four hundred fifty thousand, two hundred sixty-four".