165261355360 has 48 divisors (see below), whose sum is σ = 407405176416. Its totient is φ = 63230430208.

The previous prime is 165261355313. The next prime is 165261355381. The reversal of 165261355360 is 63553162561.

It is a super-2 number, since 2×165261355360² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22450309 + ... + 22457668.

It is an arithmetic number, because the mean of its divisors is an integer number (8487607842).

Almost surely, 2^165261355360 is an apocalyptic number.

165261355360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165261355360 is an abundant number, since it is smaller than the sum of its proper divisors (242143821056).

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

165261355360 is a wasteful number, since it uses less digits than its factorization.

165261355360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44908015 (or 44908007 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 43.

The spelling of 165261355360 in words is "one hundred sixty-five billion, two hundred sixty-one million, three hundred fifty-five thousand, three hundred sixty".