68697879671 has 2 divisors, whose sum is σ = 68697879672. Its totient is φ = 68697879670.

The previous prime is 68697879647. The next prime is 68697879709. The reversal of 68697879671 is 17697879686.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68697879671 - 2²⁶ = 68630770807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68697875671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34348939835 + 34348939836.

It is an arithmetic number, because the mean of its divisors is an integer number (34348939836).

Almost surely, 2^68697879671 is an apocalyptic number.

68697879671 is a deficient number, since it is larger than the sum of its proper divisors (1).

68697879671 is an equidigital number, since it uses as much as digits as its factorization.

68697879671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 384072192, while the sum is 74.

The spelling of 68697879671 in words is "sixty-eight billion, six hundred ninety-seven million, eight hundred seventy-nine thousand, six hundred seventy-one".