79230957077 has 2 divisors, whose sum is σ = 79230957078. Its totient is φ = 79230957076.

The previous prime is 79230957073. The next prime is 79230957131. The reversal of 79230957077 is 77075903297.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76887525796 + 2343431281 = 277286^2 + 48409^2 .

It is an emirp because it is prime and its reverse (77075903297) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79230957077 - 2² = 79230957073 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79230957073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39615478538 + 39615478539.

It is an arithmetic number, because the mean of its divisors is an integer number (39615478539).

Almost surely, 2^79230957077 is an apocalyptic number.

It is an amenable number.

79230957077 is a deficient number, since it is larger than the sum of its proper divisors (1).

79230957077 is an equidigital number, since it uses as much as digits as its factorization.

79230957077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5834430, while the sum is 56.

The spelling of 79230957077 in words is "seventy-nine billion, two hundred thirty million, nine hundred fifty-seven thousand, seventy-seven".