77745600654769 has 2 divisors, whose sum is σ = 77745600654770. Its totient is φ = 77745600654768.

The previous prime is 77745600654719. The next prime is 77745600654809. The reversal of 77745600654769 is 96745600654777.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42313880127744 + 35431720527025 = 6504912^2 + 5952455^2 .

It is a cyclic number.

It is not a de Polignac number, because 77745600654769 - 2²⁹ = 77745063783857 is a prime.

It is a super-2 number, since 2×77745600654769² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (77745600654719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38872800327384 + 38872800327385.

It is an arithmetic number, because the mean of its divisors is an integer number (38872800327385).

Almost surely, 2^{77745600654769} is an apocalyptic number.

It is an amenable number.

77745600654769 is a deficient number, since it is larger than the sum of its proper divisors (1).

77745600654769 is an equidigital number, since it uses as much as digits as its factorization.

77745600654769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1867017600, while the sum is 73.

The spelling of 77745600654769 in words is "seventy-seven trillion, seven hundred forty-five billion, six hundred million, six hundred fifty-four thousand, seven hundred sixty-nine".