70662212779 has 2 divisors, whose sum is σ = 70662212780. Its totient is φ = 70662212778.

The previous prime is 70662212773. The next prime is 70662212843. The reversal of 70662212779 is 97721226607.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70662212779 - 2⁹ = 70662212267 is a prime.

It is not a weakly prime, because it can be changed into another prime (70662212773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35331106389 + 35331106390.

It is an arithmetic number, because the mean of its divisors is an integer number (35331106390).

Almost surely, 2^70662212779 is an apocalyptic number.

70662212779 is a deficient number, since it is larger than the sum of its proper divisors (1).

70662212779 is an equidigital number, since it uses as much as digits as its factorization.

70662212779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 889056, while the sum is 49.

The spelling of 70662212779 in words is "seventy billion, six hundred sixty-two million, two hundred twelve thousand, seven hundred seventy-nine".