68876387407 has 2 divisors, whose sum is σ = 68876387408. Its totient is φ = 68876387406.

The previous prime is 68876387401. The next prime is 68876387509. The reversal of 68876387407 is 70478367886.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68876387407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68876387401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34438193703 + 34438193704.

It is an arithmetic number, because the mean of its divisors is an integer number (34438193704).

Almost surely, 2^68876387407 is an apocalyptic number.

68876387407 is a deficient number, since it is larger than the sum of its proper divisors (1).

68876387407 is an equidigital number, since it uses as much as digits as its factorization.

68876387407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75866112, while the sum is 64.

The spelling of 68876387407 in words is "sixty-eight billion, eight hundred seventy-six million, three hundred eighty-seven thousand, four hundred seven".