68111110961 has 2 divisors, whose sum is σ = 68111110962. Its totient is φ = 68111110960.

The previous prime is 68111110943. The next prime is 68111110981. The reversal of 68111110961 is 16901111186.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65359479025 + 2751631936 = 255655^2 + 52456^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68111110961 is a prime.

It is not a weakly prime, because it can be changed into another prime (68111110901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34055555480 + 34055555481.

It is an arithmetic number, because the mean of its divisors is an integer number (34055555481).

Almost surely, 2^68111110961 is an apocalyptic number.

It is an amenable number.

68111110961 is a deficient number, since it is larger than the sum of its proper divisors (1).

68111110961 is an equidigital number, since it uses as much as digits as its factorization.

68111110961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 35.

The spelling of 68111110961 in words is "sixty-eight billion, one hundred eleven million, one hundred ten thousand, nine hundred sixty-one".