346142778979 has 2 divisors, whose sum is σ = 346142778980. Its totient is φ = 346142778978.

The previous prime is 346142778901. The next prime is 346142779009. The reversal of 346142778979 is 979877241643.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 346142778979 - 2⁹ = 346142778467 is a prime.

It is not a weakly prime, because it can be changed into another prime (346142770979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173071389489 + 173071389490.

It is an arithmetic number, because the mean of its divisors is an integer number (173071389490).

Almost surely, 2^346142778979 is an apocalyptic number.

346142778979 is a deficient number, since it is larger than the sum of its proper divisors (1).

346142778979 is an equidigital number, since it uses as much as digits as its factorization.

346142778979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 128024064, while the sum is 67.

The spelling of 346142778979 in words is "three hundred forty-six billion, one hundred forty-two million, seven hundred seventy-eight thousand, nine hundred seventy-nine".