165145634023356 has 96 divisors (see below), whose sum is σ = 489322980840960. Its totient is φ = 47184217718400.

The previous prime is 165145634023339. The next prime is 165145634023387. The reversal of 165145634023356 is 653320436541561.

165145634023356 is a `hidden beast` number, since 1 + 6 + 5 + 1 + 4 + 563 + 4 + 0 + 23 + 3 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 180106491 + ... + 181021101.

It is an arithmetic number, because the mean of its divisors is an integer number (5097114383760).

Almost surely, 2^{165145634023356} is an apocalyptic number.

It is an amenable number.

165145634023356 is an abundant number, since it is smaller than the sum of its proper divisors (324177346817604).

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

165145634023356 is a wasteful number, since it uses less digits than its factorization.

165145634023356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153472 (or 1153464 counting only the distinct ones).

The product of its (nonzero) digits is 23328000, while the sum is 54.

The spelling of 165145634023356 in words is "one hundred sixty-five trillion, one hundred forty-five billion, six hundred thirty-four million, twenty-three thousand, three hundred fifty-six".