68761467497 has 2 divisors, whose sum is σ = 68761467498. Its totient is φ = 68761467496.

The previous prime is 68761467479. The next prime is 68761467539. The reversal of 68761467497 is 79476416786.

Together with previous prime (68761467479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41774863321 + 26986604176 = 204389^2 + 164276^2 .

It is a cyclic number.

It is not a de Polignac number, because 68761467497 - 2²⁰ = 68760418921 is a prime.

It is not a weakly prime, because it can be changed into another prime (68761467197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34380733748 + 34380733749.

It is an arithmetic number, because the mean of its divisors is an integer number (34380733749).

Almost surely, 2^68761467497 is an apocalyptic number.

It is an amenable number.

68761467497 is a deficient number, since it is larger than the sum of its proper divisors (1).

68761467497 is an equidigital number, since it uses as much as digits as its factorization.

68761467497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 85349376, while the sum is 65.

The spelling of 68761467497 in words is "sixty-eight billion, seven hundred sixty-one million, four hundred sixty-seven thousand, four hundred ninety-seven".