163860904560 has 40 divisors (see below), whose sum is σ = 507968804880. Its totient is φ = 43696241152.

The previous prime is 163860904513. The next prime is 163860904577. The reversal of 163860904560 is 65409068361.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341376645 + ... + 341377124.

It is an arithmetic number, because the mean of its divisors is an integer number (12699220122).

Almost surely, 2^163860904560 is an apocalyptic number.

163860904560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163860904560 is an abundant number, since it is smaller than the sum of its proper divisors (344107900320).

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

163860904560 is a wasteful number, since it uses less digits than its factorization.

163860904560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682753785 (or 682753779 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 48.

The spelling of 163860904560 in words is "one hundred sixty-three billion, eight hundred sixty million, nine hundred four thousand, five hundred sixty".