77837058997 has 2 divisors, whose sum is σ = 77837058998. Its totient is φ = 77837058996.

The previous prime is 77837058941. The next prime is 77837059007. The reversal of 77837058997 is 79985073877.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74514804676 + 3322254321 = 272974^2 + 57639^2 .

It is a cyclic number.

It is not a de Polignac number, because 77837058997 - 2⁷ = 77837058869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77837058097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38918529498 + 38918529499.

It is an arithmetic number, because the mean of its divisors is an integer number (38918529499).

Almost surely, 2^77837058997 is an apocalyptic number.

It is an amenable number.

77837058997 is a deficient number, since it is larger than the sum of its proper divisors (1).

77837058997 is an equidigital number, since it uses as much as digits as its factorization.

77837058997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186701760, while the sum is 70.

The spelling of 77837058997 in words is "seventy-seven billion, eight hundred thirty-seven million, fifty-eight thousand, nine hundred ninety-seven".