68372500139 has 2 divisors, whose sum is σ = 68372500140. Its totient is φ = 68372500138.

The previous prime is 68372500129. The next prime is 68372500181. The reversal of 68372500139 is 93100527386.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68372500139 - 2⁸ = 68372499883 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68372500139.

It is not a weakly prime, because it can be changed into another prime (68372500129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34186250069 + 34186250070.

It is an arithmetic number, because the mean of its divisors is an integer number (34186250070).

Almost surely, 2^68372500139 is an apocalyptic number.

68372500139 is a deficient number, since it is larger than the sum of its proper divisors (1).

68372500139 is an equidigital number, since it uses as much as digits as its factorization.

68372500139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 68372500139 in words is "sixty-eight billion, three hundred seventy-two million, five hundred thousand, one hundred thirty-nine".