165249073601 has 16 divisors (see below), whose sum is σ = 166463943360. Its totient is φ = 164040327360.

The previous prime is 165249073553. The next prime is 165249073621. The reversal of 165249073601 is 106370942561.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165249073601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165249073621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99009995 + ... + 99011663.

It is an arithmetic number, because the mean of its divisors is an integer number (10403996460).

Almost surely, 2^165249073601 is an apocalyptic number.

It is an amenable number.

165249073601 is a deficient number, since it is larger than the sum of its proper divisors (1214869759).

165249073601 is a wasteful number, since it uses less digits than its factorization.

165249073601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3104.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 165249073601 in words is "one hundred sixty-five billion, two hundred forty-nine million, seventy-three thousand, six hundred one".