165332320515320 has 64 divisors (see below), whose sum is σ = 425144727967680. Its totient is φ = 56684770338816.

The previous prime is 165332320515319. The next prime is 165332320515337. The reversal of 165332320515320 is 23515023233561.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23959622 + ... + 30078698.

It is an arithmetic number, because the mean of its divisors is an integer number (6642886374495).

Almost surely, 2^{165332320515320} is an apocalyptic number.

165332320515320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165332320515320 is an abundant number, since it is smaller than the sum of its proper divisors (259812407452360).

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

165332320515320 is a wasteful number, since it uses less digits than its factorization.

165332320515320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6215592 (or 6215588 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 41.

Adding to 165332320515320 its reverse (23515023233561), we get a palindrome (188847343748881).

The spelling of 165332320515320 in words is "one hundred sixty-five trillion, three hundred thirty-two billion, three hundred twenty million, five hundred fifteen thousand, three hundred twenty".