279423566959 has 2 divisors, whose sum is σ = 279423566960. Its totient is φ = 279423566958.

The previous prime is 279423566911. The next prime is 279423567047. The reversal of 279423566959 is 959665324972.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 279423566959 - 2⁹ = 279423566447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 279423566894 and 279423566903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (279423560959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139711783479 + 139711783480.

It is an arithmetic number, because the mean of its divisors is an integer number (139711783480).

Almost surely, 2^279423566959 is an apocalyptic number.

279423566959 is a deficient number, since it is larger than the sum of its proper divisors (1).

279423566959 is an equidigital number, since it uses as much as digits as its factorization.

279423566959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 220449600, while the sum is 67.

The spelling of 279423566959 in words is "two hundred seventy-nine billion, four hundred twenty-three million, five hundred sixty-six thousand, nine hundred fifty-nine".