163270134640 has 80 divisors (see below), whose sum is σ = 381549293568. Its totient is φ = 64974083328.

The previous prime is 163270134637. The next prime is 163270134653. The reversal of 163270134640 is 46431072361.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 163270134640.

It is a congruent number.

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, 12846529 + ... + 12859231.

Almost surely, 2^163270134640 is an apocalyptic number.

163270134640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163270134640 is an abundant number, since it is smaller than the sum of its proper divisors (218279158928).

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

163270134640 is a wasteful number, since it uses less digits than its factorization.

163270134640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13526 (or 13520 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

The spelling of 163270134640 in words is "one hundred sixty-three billion, two hundred seventy million, one hundred thirty-four thousand, six hundred forty".