68257883951 has 2 divisors, whose sum is σ = 68257883952. Its totient is φ = 68257883950.

The previous prime is 68257883867. The next prime is 68257883977. The reversal of 68257883951 is 15938875286.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68257883951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68257883651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34128941975 + 34128941976.

It is an arithmetic number, because the mean of its divisors is an integer number (34128941976).

Almost surely, 2^68257883951 is an apocalyptic number.

68257883951 is a deficient number, since it is larger than the sum of its proper divisors (1).

68257883951 is an equidigital number, since it uses as much as digits as its factorization.

68257883951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29030400, while the sum is 62.

The spelling of 68257883951 in words is "sixty-eight billion, two hundred fifty-seven million, eight hundred eighty-three thousand, nine hundred fifty-one".