207816934913 has 6 divisors (see below), whose sum is σ = 241746230466. Its totient is φ = 178128801312.

The previous prime is 207816934909. The next prime is 207816934921. The reversal of 207816934913 is 319439618702.

It can be written as a sum of positive squares in only one way, i.e., 177365637904 + 30451297009 = 421148^2 + 174503^2 .

It is not a de Polignac number, because 207816934913 - 2² = 207816934909 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (207816934933) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2120580920 + ... + 2120581017.

It is an arithmetic number, because the mean of its divisors is an integer number (40291038411).

Almost surely, 2^207816934913 is an apocalyptic number.

It is an amenable number.

207816934913 is a deficient number, since it is larger than the sum of its proper divisors (33929295553).

207816934913 is an equidigital number, since it uses as much as digits as its factorization.

207816934913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4241161951 (or 4241161944 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 53.

The spelling of 207816934913 in words is "two hundred seven billion, eight hundred sixteen million, nine hundred thirty-four thousand, nine hundred thirteen".