23110021966777 has 2 divisors, whose sum is σ = 23110021966778. Its totient is φ = 23110021966776.

The previous prime is 23110021966753. The next prime is 23110021966789. The reversal of 23110021966777 is 77766912001132.

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., 15039900053161 + 8070121913616 = 3878131^2 + 2840796^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23110021966777 is a prime.

It is not a weakly prime, because it can be changed into another prime (23110021966177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11555010983388 + 11555010983389.

It is an arithmetic number, because the mean of its divisors is an integer number (11555010983389).

Almost surely, 2^{23110021966777} is an apocalyptic number.

It is an amenable number.

23110021966777 is a deficient number, since it is larger than the sum of its proper divisors (1).

23110021966777 is an equidigital number, since it uses as much as digits as its factorization.

23110021966777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1333584, while the sum is 52.

The spelling of 23110021966777 in words is "twenty-three trillion, one hundred ten billion, twenty-one million, nine hundred sixty-six thousand, seven hundred seventy-seven".