76720502879 has 2 divisors, whose sum is σ = 76720502880. Its totient is φ = 76720502878.

The previous prime is 76720502779. The next prime is 76720502891. The reversal of 76720502879 is 97820502767.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76720502879 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76720502879.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76720502279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38360251439 + 38360251440.

It is an arithmetic number, because the mean of its divisors is an integer number (38360251440).

Almost surely, 2^76720502879 is an apocalyptic number.

76720502879 is a deficient number, since it is larger than the sum of its proper divisors (1).

76720502879 is an equidigital number, since it uses as much as digits as its factorization.

76720502879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2963520, while the sum is 53.

The spelling of 76720502879 in words is "seventy-six billion, seven hundred twenty million, five hundred two thousand, eight hundred seventy-nine".