509422638679 has 2 divisors, whose sum is σ = 509422638680. Its totient is φ = 509422638678.

The previous prime is 509422638667. The next prime is 509422638689. The reversal of 509422638679 is 976836224905.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 509422638679 - 2⁷ = 509422638551 is a prime.

It is a super-2 number, since 2×509422638679² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (509422638619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254711319339 + 254711319340.

It is an arithmetic number, because the mean of its divisors is an integer number (254711319340).

Almost surely, 2^509422638679 is an apocalyptic number.

509422638679 is a deficient number, since it is larger than the sum of its proper divisors (1).

509422638679 is an equidigital number, since it uses as much as digits as its factorization.

509422638679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39191040, while the sum is 61.

The spelling of 509422638679 in words is "five hundred nine billion, four hundred twenty-two million, six hundred thirty-eight thousand, six hundred seventy-nine".