168646999794 has 96 divisors (see below), whose sum is σ = 437114905920. Its totient is φ = 42944565888.

The previous prime is 168646999789. The next prime is 168646999811. The reversal of 168646999794 is 497999646861.

It is a Harshad number since it is a multiple of its sum of digits (78).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 649944 + ... + 871619.

It is an arithmetic number, because the mean of its divisors is an integer number (4553280270).

Almost surely, 2^168646999794 is an apocalyptic number.

168646999794 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

168646999794 is an abundant number, since it is smaller than the sum of its proper divisors (268467906126).

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

168646999794 is a wasteful number, since it uses less digits than its factorization.

168646999794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1521624 (or 1521617 counting only the distinct ones).

The product of its digits is 1269789696, while the sum is 78.

The spelling of 168646999794 in words is "one hundred sixty-eight billion, six hundred forty-six million, nine hundred ninety-nine thousand, seven hundred ninety-four".