345680768077 has 2 divisors, whose sum is σ = 345680768078. Its totient is φ = 345680768076.

The previous prime is 345680767987. The next prime is 345680768087. The reversal of 345680768077 is 770867086543.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 218826548521 + 126854219556 = 467789^2 + 356166^2 .

It is a cyclic number.

It is not a de Polignac number, because 345680768077 - 2²³ = 345672379469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345680768087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172840384038 + 172840384039.

It is an arithmetic number, because the mean of its divisors is an integer number (172840384039).

Almost surely, 2^345680768077 is an apocalyptic number.

It is an amenable number.

345680768077 is a deficient number, since it is larger than the sum of its proper divisors (1).

345680768077 is an equidigital number, since it uses as much as digits as its factorization.

345680768077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47416320, while the sum is 61.

The spelling of 345680768077 in words is "three hundred forty-five billion, six hundred eighty million, seven hundred sixty-eight thousand, seventy-seven".