74680688779 has 2 divisors, whose sum is σ = 74680688780. Its totient is φ = 74680688778.

The previous prime is 74680688737. The next prime is 74680688809. The reversal of 74680688779 is 97788608647.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74680688779 - 2³¹ = 72533205131 is a prime.

It is not a weakly prime, because it can be changed into another prime (74680668779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37340344389 + 37340344390.

It is an arithmetic number, because the mean of its divisors is an integer number (37340344390).

Almost surely, 2^74680688779 is an apocalyptic number.

74680688779 is a deficient number, since it is larger than the sum of its proper divisors (1).

74680688779 is an equidigital number, since it uses as much as digits as its factorization.

74680688779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 227598336, while the sum is 70.

The spelling of 74680688779 in words is "seventy-four billion, six hundred eighty million, six hundred eighty-eight thousand, seven hundred seventy-nine".