165683863392 has 48 divisors (see below), whose sum is σ = 436038286320. Its totient is φ = 55085967872.

The previous prime is 165683863381. The next prime is 165683863393. The reversal of 165683863392 is 293368386561.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×165683863392² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165683863393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2181003 + ... + 2255690.

It is an arithmetic number, because the mean of its divisors is an integer number (9084130965).

Almost surely, 2^165683863392 is an apocalyptic number.

165683863392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165683863392 is an abundant number, since it is smaller than the sum of its proper divisors (270354422928).

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

165683863392 is a wasteful number, since it uses less digits than its factorization.

165683863392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4437095 (or 4437087 counting only the distinct ones).

The product of its digits is 33592320, while the sum is 60.

The spelling of 165683863392 in words is "one hundred sixty-five billion, six hundred eighty-three million, eight hundred sixty-three thousand, three hundred ninety-two".