17116977211991 has 2 divisors, whose sum is σ = 17116977211992. Its totient is φ = 17116977211990.

The previous prime is 17116977211981. The next prime is 17116977212021. The reversal of 17116977211991 is 19911277961171.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 17116977211991 - 2²² = 17116973017687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17116977211981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8558488605995 + 8558488605996.

It is an arithmetic number, because the mean of its divisors is an integer number (8558488605996).

Almost surely, 2^{17116977211991} is an apocalyptic number.

17116977211991 is a deficient number, since it is larger than the sum of its proper divisors (1).

17116977211991 is an equidigital number, since it uses as much as digits as its factorization.

17116977211991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3000564, while the sum is 62.

The spelling of 17116977211991 in words is "seventeen trillion, one hundred sixteen billion, nine hundred seventy-seven million, two hundred eleven thousand, nine hundred ninety-one".