165357265356 has 36 divisors (see below), whose sum is σ = 418084266600. Its totient is φ = 55106185728.

The previous prime is 165357265351. The next prime is 165357265361. The reversal of 165357265356 is 653562753561.

It is a happy number.

165357265356 is a `hidden beast` number, since 1 + 6 + 5 + 3 + 572 + 65 + 3 + 5 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (165357265351) and next prime (165357265361).

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (165357265351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 381066 + ... + 689873.

It is an arithmetic number, because the mean of its divisors is an integer number (11613451850).

Almost surely, 2^165357265356 is an apocalyptic number.

It is an amenable number.

165357265356 is an abundant number, since it is smaller than the sum of its proper divisors (252727001244).

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

165357265356 is a wasteful number, since it uses less digits than its factorization.

165357265356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075238 (or 1075233 counting only the distinct ones).

The product of its digits is 17010000, while the sum is 54.

The spelling of 165357265356 in words is "one hundred sixty-five billion, three hundred fifty-seven million, two hundred sixty-five thousand, three hundred fifty-six".