866111236979 has 2 divisors, whose sum is σ = 866111236980. Its totient is φ = 866111236978.

The previous prime is 866111236937. The next prime is 866111237003. The reversal of 866111236979 is 979632111668.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 866111236979 - 2³² = 861816269683 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (866111236919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433055618489 + 433055618490.

It is an arithmetic number, because the mean of its divisors is an integer number (433055618490).

Almost surely, 2^866111236979 is an apocalyptic number.

866111236979 is a deficient number, since it is larger than the sum of its proper divisors (1).

866111236979 is an equidigital number, since it uses as much as digits as its factorization.

866111236979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5878656, while the sum is 59.

The spelling of 866111236979 in words is "eight hundred sixty-six billion, one hundred eleven million, two hundred thirty-six thousand, nine hundred seventy-nine".