76778070713 has 2 divisors, whose sum is σ = 76778070714. Its totient is φ = 76778070712.

The previous prime is 76778070709. The next prime is 76778070737. The reversal of 76778070713 is 31707087767.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48687305104 + 28090765609 = 220652^2 + 167603^2 .

It is a cyclic number.

It is not a de Polignac number, because 76778070713 - 2² = 76778070709 is a prime.

It is not a weakly prime, because it can be changed into another prime (76778070763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38389035356 + 38389035357.

It is an arithmetic number, because the mean of its divisors is an integer number (38389035357).

Almost surely, 2^76778070713 is an apocalyptic number.

It is an amenable number.

76778070713 is a deficient number, since it is larger than the sum of its proper divisors (1).

76778070713 is an equidigital number, since it uses as much as digits as its factorization.

76778070713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2420208, while the sum is 53.

The spelling of 76778070713 in words is "seventy-six billion, seven hundred seventy-eight million, seventy thousand, seven hundred thirteen".