68375762491 has 2 divisors, whose sum is σ = 68375762492. Its totient is φ = 68375762490.

The previous prime is 68375762453. The next prime is 68375762519. The reversal of 68375762491 is 19426757386.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68375762491 - 2¹⁹ = 68375238203 is a prime.

It is not a weakly prime, because it can be changed into another prime (68375762891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34187881245 + 34187881246.

It is an arithmetic number, because the mean of its divisors is an integer number (34187881246).

Almost surely, 2^68375762491 is an apocalyptic number.

68375762491 is a deficient number, since it is larger than the sum of its proper divisors (1).

68375762491 is an equidigital number, since it uses as much as digits as its factorization.

68375762491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15240960, while the sum is 58.

The spelling of 68375762491 in words is "sixty-eight billion, three hundred seventy-five million, seven hundred sixty-two thousand, four hundred ninety-one".