165253113663 has 16 divisors (see below), whose sum is σ = 240386391552. Its totient is φ = 100145808000.

The previous prime is 165253113617. The next prime is 165253113667. The reversal of 165253113663 is 366311352561.

It is a happy number.

It is not a de Polignac number, because 165253113663 - 2¹⁶ = 165253048127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165253113667) 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, 268458 + ... + 634488.

It is an arithmetic number, because the mean of its divisors is an integer number (15024149472).

Almost surely, 2^165253113663 is an apocalyptic number.

165253113663 is a deficient number, since it is larger than the sum of its proper divisors (75133277889).

165253113663 is a wasteful number, since it uses less digits than its factorization.

165253113663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379726.

The product of its digits is 291600, while the sum is 42.

The spelling of 165253113663 in words is "one hundred sixty-five billion, two hundred fifty-three million, one hundred thirteen thousand, six hundred sixty-three".