165145623136 has 24 divisors (see below), whose sum is σ = 350140480704. Its totient is φ = 76221056640.

The previous prime is 165145623113. The next prime is 165145623199. The reversal of 165145623136 is 631326541561.

It is a junction number, because it is equal to n+sod(n) for n = 165145623092 and 165145623101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198491920 + ... + 198492751.

It is an arithmetic number, because the mean of its divisors is an integer number (14589186696).

Almost surely, 2^165145623136 is an apocalyptic number.

165145623136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165145623136 is an abundant number, since it is smaller than the sum of its proper divisors (184994857568).

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

165145623136 is a wasteful number, since it uses less digits than its factorization.

165145623136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396984694 (or 396984686 counting only the distinct ones).

The product of its digits is 388800, while the sum is 43.

The spelling of 165145623136 in words is "one hundred sixty-five billion, one hundred forty-five million, six hundred twenty-three thousand, one hundred thirty-six".