68137083199 has 4 divisors (see below), whose sum is σ = 68137910464. Its totient is φ = 68136255936.

The previous prime is 68137083191. The next prime is 68137083211. The reversal of 68137083199 is 99138073186.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68137083199 - 2³ = 68137083191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68137083191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274482 + ... + 460015.

It is an arithmetic number, because the mean of its divisors is an integer number (17034477616).

Almost surely, 2^68137083199 is an apocalyptic number.

68137083199 is a deficient number, since it is larger than the sum of its proper divisors (827265).

68137083199 is an equidigital number, since it uses as much as digits as its factorization.

68137083199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827264.

The product of its (nonzero) digits is 1959552, while the sum is 55.

The spelling of 68137083199 in words is "sixty-eight billion, one hundred thirty-seven million, eighty-three thousand, one hundred ninety-nine".