163860064985799 has 576 divisors, whose sum is σ = 322852396339200. Its totient is φ = 77752246394880.

The previous prime is 163860064985767. The next prime is 163860064985873. The reversal of 163860064985799 is 997589460068361.

163860064985799 is a `hidden beast` number, since 1 + 6 + 38 + 6 + 0 + 0 + 6 + 4 + 9 + 8 + 579 + 9 = 666.

It is not a de Polignac number, because 163860064985799 - 2⁵ = 163860064985767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163860064985759) by changing a digit.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 400635855507 + ... + 400635855915.

Almost surely, 2^{163860064985799} is an apocalyptic number.

163860064985799 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

163860064985799 is a deficient number, since it is larger than the sum of its proper divisors (158992331353401).

163860064985799 is a wasteful number, since it uses less digits than its factorization.

163860064985799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956 (or 922 counting only the distinct ones).

The product of its (nonzero) digits is 4232632320, while the sum is 81.

The spelling of 163860064985799 in words is "one hundred sixty-three trillion, eight hundred sixty billion, sixty-four million, nine hundred eighty-five thousand, seven hundred ninety-nine".