165839121060 has 48 divisors (see below), whose sum is σ = 473110860096. Its totient is φ = 43389354112.

The previous prime is 165839121037. The next prime is 165839121083. The reversal of 165839121060 is 60121938561.

It is an interprime number because it is at equal distance from previous prime (165839121037) and next prime (165839121083).

It is a super-2 number, since 2×165839121060² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26072154 + ... + 26078513.

It is an arithmetic number, because the mean of its divisors is an integer number (9856476252).

Almost surely, 2^165839121060 is an apocalyptic number.

165839121060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165839121060 is an abundant number, since it is smaller than the sum of its proper divisors (307271739036).

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

165839121060 is a wasteful number, since it uses less digits than its factorization.

165839121060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52150732 (or 52150730 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The spelling of 165839121060 in words is "one hundred sixty-five billion, eight hundred thirty-nine million, one hundred twenty-one thousand, sixty".