68985294377 has 2 divisors, whose sum is σ = 68985294378. Its totient is φ = 68985294376.

The previous prime is 68985294349. The next prime is 68985294479. The reversal of 68985294377 is 77349258986.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56462789161 + 12522505216 = 237619^2 + 111904^2 .

It is a cyclic number.

It is not a de Polignac number, because 68985294377 - 2³⁶ = 265817641 is a prime.

It is not a weakly prime, because it can be changed into another prime (68985294307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34492647188 + 34492647189.

It is an arithmetic number, because the mean of its divisors is an integer number (34492647189).

Almost surely, 2^68985294377 is an apocalyptic number.

It is an amenable number.

68985294377 is a deficient number, since it is larger than the sum of its proper divisors (1).

68985294377 is an equidigital number, since it uses as much as digits as its factorization.

68985294377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 182891520, while the sum is 68.

The spelling of 68985294377 in words is "sixty-eight billion, nine hundred eighty-five million, two hundred ninety-four thousand, three hundred seventy-seven".