205312470679 has 2 divisors, whose sum is σ = 205312470680. Its totient is φ = 205312470678.

The previous prime is 205312470661. The next prime is 205312470691. The reversal of 205312470679 is 976074213502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205312470679 - 2³⁵ = 170952732311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205312470079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102656235339 + 102656235340.

It is an arithmetic number, because the mean of its divisors is an integer number (102656235340).

Almost surely, 2^205312470679 is an apocalyptic number.

205312470679 is a deficient number, since it is larger than the sum of its proper divisors (1).

205312470679 is an equidigital number, since it uses as much as digits as its factorization.

205312470679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 46.

The spelling of 205312470679 in words is "two hundred five billion, three hundred twelve million, four hundred seventy thousand, six hundred seventy-nine".