70639392179 has 2 divisors, whose sum is σ = 70639392180. Its totient is φ = 70639392178.

The previous prime is 70639392149. The next prime is 70639392217. The reversal of 70639392179 is 97129393607.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70639392179 is a prime.

It is not a weakly prime, because it can be changed into another prime (70639392149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35319696089 + 35319696090.

It is an arithmetic number, because the mean of its divisors is an integer number (35319696090).

Almost surely, 2^70639392179 is an apocalyptic number.

70639392179 is a deficient number, since it is larger than the sum of its proper divisors (1).

70639392179 is an equidigital number, since it uses as much as digits as its factorization.

70639392179 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3857868, while the sum is 56.

The spelling of 70639392179 in words is "seventy billion, six hundred thirty-nine million, three hundred ninety-two thousand, one hundred seventy-nine".