68936675497 has 2 divisors, whose sum is σ = 68936675498. Its totient is φ = 68936675496.

The previous prime is 68936675491. The next prime is 68936675513. The reversal of 68936675497 is 79457663986.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68508351081 + 428324416 = 261741^2 + 20696^2 .

It is a cyclic number.

It is not a de Polignac number, because 68936675497 - 2⁷ = 68936675369 is a prime.

It is not a weakly prime, because it can be changed into another prime (68936675491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34468337748 + 34468337749.

It is an arithmetic number, because the mean of its divisors is an integer number (34468337749).

Almost surely, 2^68936675497 is an apocalyptic number.

It is an amenable number.

68936675497 is a deficient number, since it is larger than the sum of its proper divisors (1).

68936675497 is an equidigital number, since it uses as much as digits as its factorization.

68936675497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 411505920, while the sum is 70.

The spelling of 68936675497 in words is "sixty-eight billion, nine hundred thirty-six million, six hundred seventy-five thousand, four hundred ninety-seven".