168901926644 has 96 divisors (see below), whose sum is σ = 338538009600. Its totient is φ = 72985651200.

The previous prime is 168901926631. The next prime is 168901926727. The reversal of 168901926644 is 446629109861.

It is a self number, because there is not a number n which added to its sum of digits gives 168901926644.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 150401867 + ... + 150402989.

It is an arithmetic number, because the mean of its divisors is an integer number (3526437600).

Almost surely, 2^168901926644 is an apocalyptic number.

It is an amenable number.

168901926644 is an abundant number, since it is smaller than the sum of its proper divisors (169636082956).

168901926644 is a wasteful number, since it uses less digits than its factorization.

168901926644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1941 (or 1939 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 56.

The spelling of 168901926644 in words is "one hundred sixty-eight billion, nine hundred one million, nine hundred twenty-six thousand, six hundred forty-four".