163065864840 has 64 divisors (see below), whose sum is σ = 489819476160. Its totient is φ = 43428952320.

The previous prime is 163065864823. The next prime is 163065864851. The reversal of 163065864840 is 48468560361.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 768891 + ... + 957770.

It is an arithmetic number, because the mean of its divisors is an integer number (7653429315).

Almost surely, 2^163065864840 is an apocalyptic number.

163065864840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163065864840 is an abundant number, since it is smaller than the sum of its proper divisors (326753611320).

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

163065864840 is a wasteful number, since it uses less digits than its factorization.

163065864840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1727462 (or 1727458 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 51.

The spelling of 163065864840 in words is "one hundred sixty-three billion, sixty-five million, eight hundred sixty-four thousand, eight hundred forty".