165309756868 has 12 divisors (see below), whose sum is σ = 293609867152. Its totient is φ = 81421223400.

The previous prime is 165309756863. The next prime is 165309756917. The reversal of 165309756868 is 868657903561.

It is not an unprimeable number, because it can be changed into a prime (165309756863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308413458 + ... + 308413993.

Almost surely, 2^165309756868 is an apocalyptic number.

It is an amenable number.

165309756868 is a deficient number, since it is larger than the sum of its proper divisors (128300110284).

165309756868 is a wasteful number, since it uses less digits than its factorization.

165309756868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616827522 (or 616827520 counting only the distinct ones).

The product of its (nonzero) digits is 65318400, while the sum is 64.

The spelling of 165309756868 in words is "one hundred sixty-five billion, three hundred nine million, seven hundred fifty-six thousand, eight hundred sixty-eight".