165564023352 has 64 divisors (see below), whose sum is σ = 509427770880. Its totient is φ = 43665236352.

The previous prime is 165564023323. The next prime is 165564023353. The reversal of 165564023352 is 253320465561.

It is a happy number.

165564023352 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×165564023352² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165564023353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37901668 + ... + 37906035.

It is an arithmetic number, because the mean of its divisors is an integer number (7959808920).

Almost surely, 2^165564023352 is an apocalyptic number.

165564023352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165564023352 is an abundant number, since it is smaller than the sum of its proper divisors (343863747528).

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

165564023352 is a wasteful number, since it uses less digits than its factorization.

165564023352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75807732 (or 75807728 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 42.

The spelling of 165564023352 in words is "one hundred sixty-five billion, five hundred sixty-four million, twenty-three thousand, three hundred fifty-two".