163873980705 has 32 divisors (see below), whose sum is σ = 263169653760. Its totient is φ = 87076059840.

The previous prime is 163873980679. The next prime is 163873980737. The reversal of 163873980705 is 507089378361.

It is not a de Polignac number, because 163873980705 - 2⁸ = 163873980449 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7829284 + ... + 7850186.

It is an arithmetic number, because the mean of its divisors is an integer number (8224051680).

Almost surely, 2^163873980705 is an apocalyptic number.

163873980705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163873980705 is a deficient number, since it is larger than the sum of its proper divisors (99295673055).

163873980705 is a wasteful number, since it uses less digits than its factorization.

163873980705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22821.

The product of its (nonzero) digits is 7620480, while the sum is 57.

The spelling of 163873980705 in words is "one hundred sixty-three billion, eight hundred seventy-three million, nine hundred eighty thousand, seven hundred five".