210399270717 has 16 divisors (see below), whose sum is σ = 295034388480. Its totient is φ = 133111207152.

The previous prime is 210399270709. The next prime is 210399270761. The reversal of 210399270717 is 717072993012.

It is not a de Polignac number, because 210399270717 - 2³ = 210399270709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210399270017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11996217 + ... + 12013742.

It is an arithmetic number, because the mean of its divisors is an integer number (18439649280).

Almost surely, 2^210399270717 is an apocalyptic number.

It is an amenable number.

210399270717 is a deficient number, since it is larger than the sum of its proper divisors (84635117763).

210399270717 is a wasteful number, since it uses less digits than its factorization.

210399270717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24010112.

The product of its (nonzero) digits is 333396, while the sum is 48.

The spelling of 210399270717 in words is "two hundred ten billion, three hundred ninety-nine million, two hundred seventy thousand, seven hundred seventeen".