209130372903713 has 4 divisors (see below), whose sum is σ = 209130560974740. Its totient is φ = 209130184832688.

The previous prime is 209130372903671. The next prime is 209130372903743. The reversal of 209130372903713 is 317309273031902.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 203665779407104 + 5464593496609 = 14271152^2 + 2337647^2 .

It is a cyclic number.

It is not a de Polignac number, because 209130372903713 - 2⁸ = 209130372903457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (209130372903743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92357570 + ... + 94594827.

It is an arithmetic number, because the mean of its divisors is an integer number (52282640243685).

Almost surely, 2^{209130372903713} is an apocalyptic number.

It is an amenable number.

209130372903713 is a deficient number, since it is larger than the sum of its proper divisors (188071027).

209130372903713 is a wasteful number, since it uses less digits than its factorization.

209130372903713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188071026.

The product of its (nonzero) digits is 1285956, while the sum is 50.

The spelling of 209130372903713 in words is "two hundred nine trillion, one hundred thirty billion, three hundred seventy-two million, nine hundred three thousand, seven hundred thirteen".