279612961213 has 2 divisors, whose sum is σ = 279612961214. Its totient is φ = 279612961212.

The previous prime is 279612961189. The next prime is 279612961223. The reversal of 279612961213 is 312169216972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 267126686649 + 12486274564 = 516843^2 + 111742^2 .

It is a cyclic number.

It is not a de Polignac number, because 279612961213 - 2¹³ = 279612953021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (279612961223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139806480606 + 139806480607.

It is an arithmetic number, because the mean of its divisors is an integer number (139806480607).

Almost surely, 2^279612961213 is an apocalyptic number.

It is an amenable number.

279612961213 is a deficient number, since it is larger than the sum of its proper divisors (1).

279612961213 is an equidigital number, since it uses as much as digits as its factorization.

279612961213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 49.

The spelling of 279612961213 in words is "two hundred seventy-nine billion, six hundred twelve million, nine hundred sixty-one thousand, two hundred thirteen".