163400647568 has 40 divisors (see below), whose sum is σ = 324678865056. Its totient is φ = 79617081600.

The previous prime is 163400647469. The next prime is 163400647573. The reversal of 163400647568 is 865746004361.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438203 + ... + 720293.

Almost surely, 2^163400647568 is an apocalyptic number.

It is an amenable number.

163400647568 is a deficient number, since it is larger than the sum of its proper divisors (161278217488).

163400647568 is a wasteful number, since it uses less digits than its factorization.

163400647568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283023 (or 283017 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 50.

The spelling of 163400647568 in words is "one hundred sixty-three billion, four hundred million, six hundred forty-seven thousand, five hundred sixty-eight".