165045073545 has 24 divisors (see below), whose sum is σ = 312085230912. Its totient is φ = 80021853600.

The previous prime is 165045073511. The next prime is 165045073639. The reversal of 165045073545 is 545370540561.

165045073545 is a `hidden beast` number, since 1 + 6 + 50 + 4 + 50 + 7 + 3 + 545 = 666.

It is not a de Polignac number, because 165045073545 - 2⁶ = 165045073481 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 165045073545.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 166711701 + ... + 166712690.

It is an arithmetic number, because the mean of its divisors is an integer number (13003551288).

Almost surely, 2^165045073545 is an apocalyptic number.

165045073545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165045073545 is a deficient number, since it is larger than the sum of its proper divisors (147040157367).

165045073545 is a wasteful number, since it uses less digits than its factorization.

165045073545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333424413 (or 333424410 counting only the distinct ones).

The product of its (nonzero) digits is 1260000, while the sum is 45.

The spelling of 165045073545 in words is "one hundred sixty-five billion, forty-five million, seventy-three thousand, five hundred forty-five".