77076540077 has 2 divisors, whose sum is σ = 77076540078. Its totient is φ = 77076540076.

The previous prime is 77076540059. The next prime is 77076540119. The reversal of 77076540077 is 77004567077.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76457227081 + 619312996 = 276509^2 + 24886^2 .

It is a cyclic number.

It is not a de Polignac number, because 77076540077 - 2⁸ = 77076539821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77076540977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38538270038 + 38538270039.

It is an arithmetic number, because the mean of its divisors is an integer number (38538270039).

Almost surely, 2^77076540077 is an apocalyptic number.

It is an amenable number.

77076540077 is a deficient number, since it is larger than the sum of its proper divisors (1).

77076540077 is an equidigital number, since it uses as much as digits as its factorization.

77076540077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016840, while the sum is 50.

The spelling of 77076540077 in words is "seventy-seven billion, seventy-six million, five hundred forty thousand, seventy-seven".