209130372903672 has 96 divisors (see below), whose sum is σ = 617922224225280. Its totient is φ = 63369042166080.

The previous prime is 209130372903671. The next prime is 209130372903743. The reversal of 209130372903672 is 276309273031902.

209130372903672 is a `hidden beast` number, since 2 + 0 + 91 + 3 + 0 + 372 + 90 + 36 + 72 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209130372903671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5324403 + ... + 21133149.

It is an arithmetic number, because the mean of its divisors is an integer number (6436689835680).

Almost surely, 2^{209130372903672} is an apocalyptic number.

209130372903672 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

209130372903672 is an abundant number, since it is smaller than the sum of its proper divisors (408791851321608).

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

209130372903672 is a wasteful number, since it uses less digits than its factorization.

209130372903672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15825473 (or 15825466 counting only the distinct ones).

The product of its (nonzero) digits is 5143824, while the sum is 54.

The spelling of 209130372903672 in words is "two hundred nine trillion, one hundred thirty billion, three hundred seventy-two million, nine hundred three thousand, six hundred seventy-two".