12117690577 has 2 divisors, whose sum is σ = 12117690578. Its totient is φ = 12117690576.

The previous prime is 12117690569. The next prime is 12117690601. The reversal of 12117690577 is 77509671121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9177448401 + 2940242176 = 95799^2 + 54224^2 .

It is a cyclic number.

It is not a de Polignac number, because 12117690577 - 2³ = 12117690569 is a prime.

It is not a weakly prime, because it can be changed into another prime (12117690517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6058845288 + 6058845289.

It is an arithmetic number, because the mean of its divisors is an integer number (6058845289).

Almost surely, 2^12117690577 is an apocalyptic number.

It is an amenable number.

12117690577 is a deficient number, since it is larger than the sum of its proper divisors (1).

12117690577 is an equidigital number, since it uses as much as digits as its factorization.

12117690577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 185220, while the sum is 46.

The spelling of 12117690577 in words is "twelve billion, one hundred seventeen million, six hundred ninety thousand, five hundred seventy-seven".