165366391892 has 48 divisors (see below), whose sum is σ = 319027632000. Its totient is φ = 74518109568.

The previous prime is 165366391831. The next prime is 165366391961. The reversal of 165366391892 is 298193663561.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6133313 + ... + 6160215.

It is an arithmetic number, because the mean of its divisors is an integer number (6646409000).

Almost surely, 2^165366391892 is an apocalyptic number.

It is an amenable number.

165366391892 is a deficient number, since it is larger than the sum of its proper divisors (153661240108).

165366391892 is a wasteful number, since it uses less digits than its factorization.

165366391892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29712 (or 29710 counting only the distinct ones).

The product of its digits is 12597120, while the sum is 59.

The spelling of 165366391892 in words is "one hundred sixty-five billion, three hundred sixty-six million, three hundred ninety-one thousand, eight hundred ninety-two".