77345336623 has 2 divisors, whose sum is σ = 77345336624. Its totient is φ = 77345336622.

The previous prime is 77345336609. The next prime is 77345336633. The reversal of 77345336623 is 32663354377.

It is a strong prime.

It is an emirp because it is prime and its reverse (32663354377) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77345336623 - 2²⁹ = 76808465711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77345336633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38672668311 + 38672668312.

It is an arithmetic number, because the mean of its divisors is an integer number (38672668312).

Almost surely, 2^77345336623 is an apocalyptic number.

77345336623 is a deficient number, since it is larger than the sum of its proper divisors (1).

77345336623 is an equidigital number, since it uses as much as digits as its factorization.

77345336623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5715360, while the sum is 49.

The spelling of 77345336623 in words is "seventy-seven billion, three hundred forty-five million, three hundred thirty-six thousand, six hundred twenty-three".