163207920100 has 81 divisors (see below), whose sum is σ = 359852055451. Its totient is φ = 64250569600.

The previous prime is 163207920041. The next prime is 163207920137. The reversal of 163207920100 is 1029702361.

The square root of 163207920100 is 403990.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 38790878116 + 124417041984 = 196954^2 + 352728^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 286832616 + ... + 286833184.

Almost surely, 2^163207920100 is an apocalyptic number.

163207920100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163207920100 is the 403990-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163207920100

163207920100 is an abundant number, since it is smaller than the sum of its proper divisors (196644135351).

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

163207920100 is an frugal number, since it uses more digits than its factorization.

163207920100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294 (or 647 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 31.

The spelling of 163207920100 in words is "one hundred sixty-three billion, two hundred seven million, nine hundred twenty thousand, one hundred".