163672720720 has 80 divisors (see below), whose sum is σ = 382406827968. Its totient is φ = 65148180480.

The previous prime is 163672720703. The next prime is 163672720763. The reversal of 163672720720 is 27027276361.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35993487 + ... + 35998033.

Almost surely, 2^163672720720 is an apocalyptic number.

163672720720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163672720720 is an abundant number, since it is smaller than the sum of its proper divisors (218734107248).

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

163672720720 is a wasteful number, since it uses less digits than its factorization.

163672720720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6668 (or 6662 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 43.

The spelling of 163672720720 in words is "one hundred sixty-three billion, six hundred seventy-two million, seven hundred twenty thousand, seven hundred twenty".