165252061260 has 576 divisors, whose sum is σ = 620848126080. Its totient is φ = 35022274560.

The previous prime is 165252061259. The next prime is 165252061283. The reversal of 165252061260 is 62160252561.

165252061260 is a `hidden beast` number, since 1 + 6 + 5 + 2 + 520 + 6 + 126 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 39560292 + ... + 39564468.

It is an arithmetic number, because the mean of its divisors is an integer number (1077861330).

Almost surely, 2^165252061260 is an apocalyptic number.

165252061260 is a gapful number since it is divisible by the number (10) 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 165252061260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310424063040).

165252061260 is an abundant number, since it is smaller than the sum of its proper divisors (455596064820).

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

165252061260 is a wasteful number, since it uses less digits than its factorization.

165252061260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4298 (or 4293 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 165252061260 in words is "one hundred sixty-five billion, two hundred fifty-two million, sixty-one thousand, two hundred sixty".