165453663199 has 24 divisors (see below), whose sum is σ = 191986140528. Its totient is φ = 141300472320.

The previous prime is 165453663173. The next prime is 165453663217. The reversal of 165453663199 is 991366354561.

It is a happy number.

It is not a de Polignac number, because 165453663199 - 2⁷ = 165453663071 is a prime.

It is a super-3 number, since 3×165453663199³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165453663149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100599 + ... + 583975.

It is an arithmetic number, because the mean of its divisors is an integer number (7999422522).

Almost surely, 2^165453663199 is an apocalyptic number.

165453663199 is a deficient number, since it is larger than the sum of its proper divisors (26532477329).

165453663199 is a wasteful number, since it uses less digits than its factorization.

165453663199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483483 (or 483454 counting only the distinct ones).

The product of its digits is 15746400, while the sum is 58.

The spelling of 165453663199 in words is "one hundred sixty-five billion, four hundred fifty-three million, six hundred sixty-three thousand, one hundred ninety-nine".