207664706413 has 2 divisors, whose sum is σ = 207664706414. Its totient is φ = 207664706412.

The previous prime is 207664706393. The next prime is 207664706419. The reversal of 207664706413 is 314607466702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135775299529 + 71889406884 = 368477^2 + 268122^2 .

It is a cyclic number.

It is not a de Polignac number, because 207664706413 - 2¹⁷ = 207664575341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (207664706419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103832353206 + 103832353207.

It is an arithmetic number, because the mean of its divisors is an integer number (103832353207).

Almost surely, 2^207664706413 is an apocalyptic number.

It is an amenable number.

207664706413 is a deficient number, since it is larger than the sum of its proper divisors (1).

207664706413 is an equidigital number, since it uses as much as digits as its factorization.

207664706413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 46.

The spelling of 207664706413 in words is "two hundred seven billion, six hundred sixty-four million, seven hundred six thousand, four hundred thirteen".