68885776507 has 2 divisors, whose sum is σ = 68885776508. Its totient is φ = 68885776506.

The previous prime is 68885776499. The next prime is 68885776523. The reversal of 68885776507 is 70567758886.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68885776507 - 2³ = 68885776499 is a prime.

It is not a weakly prime, because it can be changed into another prime (68885776567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34442888253 + 34442888254.

It is an arithmetic number, because the mean of its divisors is an integer number (34442888254).

Almost surely, 2^68885776507 is an apocalyptic number.

68885776507 is a deficient number, since it is larger than the sum of its proper divisors (1).

68885776507 is an equidigital number, since it uses as much as digits as its factorization.

68885776507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158054400, while the sum is 67.

The spelling of 68885776507 in words is "sixty-eight billion, eight hundred eighty-five million, seven hundred seventy-six thousand, five hundred seven".