165496544645 has 16 divisors (see below), whose sum is σ = 214698224640. Its totient is φ = 122038985664.

The previous prime is 165496544641. The next prime is 165496544699. The reversal of 165496544645 is 546445694561.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 165496544645 - 2² = 165496544641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165496544641) 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, 23537957 + ... + 23544986.

It is an arithmetic number, because the mean of its divisors is an integer number (13418639040).

Almost surely, 2^165496544645 is an apocalyptic number.

It is an amenable number.

165496544645 is a deficient number, since it is larger than the sum of its proper divisors (49201679995).

165496544645 is a wasteful number, since it uses less digits than its factorization.

165496544645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47083004.

The product of its digits is 62208000, while the sum is 59.

The spelling of 165496544645 in words is "one hundred sixty-five billion, four hundred ninety-six million, five hundred forty-four thousand, six hundred forty-five".