165302275880 has 128 divisors (see below), whose sum is σ = 439535738880. Its totient is φ = 54751714560.

The previous prime is 165302275871. The next prime is 165302275889. The reversal of 165302275880 is 88572203561.

It is an interprime number because it is at equal distance from previous prime (165302275871) and next prime (165302275889).

It is a super-2 number, since 2×165302275880² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (165302275889) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5078939 + ... + 5111381.

It is an arithmetic number, because the mean of its divisors is an integer number (3433872960).

Almost surely, 2^165302275880 is an apocalyptic number.

165302275880 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 165302275880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219767869440).

165302275880 is an abundant number, since it is smaller than the sum of its proper divisors (274233463000).

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

165302275880 is a wasteful number, since it uses less digits than its factorization.

165302275880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33079 (or 33075 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 47.

The spelling of 165302275880 in words is "one hundred sixty-five billion, three hundred two million, two hundred seventy-five thousand, eight hundred eighty".