770991937679 has 2 divisors, whose sum is σ = 770991937680. Its totient is φ = 770991937678.

The previous prime is 770991937631. The next prime is 770991937717. The reversal of 770991937679 is 976739199077.

It is a happy number.

770991937679 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-770991937679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (770991937379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385495968839 + 385495968840.

It is an arithmetic number, because the mean of its divisors is an integer number (385495968840).

Almost surely, 2^770991937679 is an apocalyptic number.

770991937679 is a deficient number, since it is larger than the sum of its proper divisors (1).

770991937679 is an equidigital number, since it uses as much as digits as its factorization.

770991937679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 283553298, while the sum is 74.

The spelling of 770991937679 in words is "seven hundred seventy billion, nine hundred ninety-one million, nine hundred thirty-seven thousand, six hundred seventy-nine".