68646288199 has 2 divisors, whose sum is σ = 68646288200. Its totient is φ = 68646288198.

The previous prime is 68646288197. The next prime is 68646288283. The reversal of 68646288199 is 99188264686.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68646288199 - 2¹ = 68646288197 is a prime.

Together with 68646288197, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68646288197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34323144099 + 34323144100.

It is an arithmetic number, because the mean of its divisors is an integer number (34323144100).

Almost surely, 2^68646288199 is an apocalyptic number.

68646288199 is a deficient number, since it is larger than the sum of its proper divisors (1).

68646288199 is an equidigital number, since it uses as much as digits as its factorization.

68646288199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 71663616, while the sum is 67.

The spelling of 68646288199 in words is "sixty-eight billion, six hundred forty-six million, two hundred eighty-eight thousand, one hundred ninety-nine".