117786656651 has 2 divisors, whose sum is σ = 117786656652. Its totient is φ = 117786656650.

The previous prime is 117786656593. The next prime is 117786656657. The reversal of 117786656651 is 156656687711.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117786656651 is a prime.

It is not a weakly prime, because it can be changed into another prime (117786656657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58893328325 + 58893328326.

It is an arithmetic number, because the mean of its divisors is an integer number (58893328326).

Almost surely, 2^117786656651 is an apocalyptic number.

117786656651 is a deficient number, since it is larger than the sum of its proper divisors (1).

117786656651 is an equidigital number, since it uses as much as digits as its factorization.

117786656651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12700800, while the sum is 59.

The spelling of 117786656651 in words is "one hundred seventeen billion, seven hundred eighty-six million, six hundred fifty-six thousand, six hundred fifty-one".