163990063776 has 96 divisors (see below), whose sum is σ = 536694778368. Its totient is φ = 42594819840.

The previous prime is 163990063751. The next prime is 163990063777. The reversal of 163990063776 is 677360099361.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (163990063777) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11085010 + ... + 11099793.

It is an arithmetic number, because the mean of its divisors is an integer number (5590570608).

Almost surely, 2^163990063776 is an apocalyptic number.

163990063776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

163990063776 is an abundant number, since it is smaller than the sum of its proper divisors (372704714592).

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

163990063776 is a wasteful number, since it uses less digits than its factorization.

163990063776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22184834 (or 22184826 counting only the distinct ones).

The product of its (nonzero) digits is 7715736, while the sum is 57.

The spelling of 163990063776 in words is "one hundred sixty-three billion, nine hundred ninety million, sixty-three thousand, seven hundred seventy-six".