168497749772 has 24 divisors (see below), whose sum is σ = 323094623040. Its totient is φ = 76252481360.

The previous prime is 168497749709. The next prime is 168497749807. The reversal of 168497749772 is 277947794861.

It is a junction number, because it is equal to n+sod(n) for n = 168497749696 and 168497749705.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8425022 + ... + 8444997.

It is an arithmetic number, because the mean of its divisors is an integer number (13462275960).

Almost surely, 2^168497749772 is an apocalyptic number.

It is an amenable number.

168497749772 is a deficient number, since it is larger than the sum of its proper divisors (154596873268).

168497749772 is a wasteful number, since it uses less digits than its factorization.

168497749772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16870261 (or 16870259 counting only the distinct ones).

The product of its digits is 298722816, while the sum is 71.

The spelling of 168497749772 in words is "one hundred sixty-eight billion, four hundred ninety-seven million, seven hundred forty-nine thousand, seven hundred seventy-two".