165000747727872 has 528 divisors, whose sum is σ = 580526899499520. Its totient is φ = 46140008914944.

The previous prime is 165000747727859. The next prime is 165000747727889. The reversal of 165000747727872 is 278727747000561.

165000747727872 is a `hidden beast` number, since 1 + 6 + 500 + 0 + 7 + 47 + 7 + 2 + 7 + 87 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62377663 + ... + 64969025.

Almost surely, 2^{165000747727872} is an apocalyptic number.

165000747727872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165000747727872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290263449749760).

165000747727872 is an abundant number, since it is smaller than the sum of its proper divisors (415526151771648).

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

165000747727872 is a wasteful number, since it uses less digits than its factorization.

165000747727872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2591453 (or 2591422 counting only the distinct ones).

The product of its (nonzero) digits is 64538880, while the sum is 63.

The spelling of 165000747727872 in words is "one hundred sixty-five trillion, seven hundred forty-seven million, seven hundred twenty-seven thousand, eight hundred seventy-two".