77830770233 has 2 divisors, whose sum is σ = 77830770234. Its totient is φ = 77830770232.

The previous prime is 77830770221. The next prime is 77830770239. The reversal of 77830770233 is 33207703877.

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., 67206933049 + 10623837184 = 259243^2 + 103072^2 .

It is a cyclic number.

It is not a de Polignac number, because 77830770233 - 2³⁰ = 76757028409 is a prime.

It is not a weakly prime, because it can be changed into another prime (77830770239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38915385116 + 38915385117.

It is an arithmetic number, because the mean of its divisors is an integer number (38915385117).

Almost surely, 2^77830770233 is an apocalyptic number.

It is an amenable number.

77830770233 is a deficient number, since it is larger than the sum of its proper divisors (1).

77830770233 is an equidigital number, since it uses as much as digits as its factorization.

77830770233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1037232, while the sum is 47.

The spelling of 77830770233 in words is "seventy-seven billion, eight hundred thirty million, seven hundred seventy thousand, two hundred thirty-three".