68213992099 has 4 divisors (see below), whose sum is σ = 74415264120. Its totient is φ = 62012720080.

The previous prime is 68213992097. The next prime is 68213992117. The reversal of 68213992099 is 99029931286.

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 68213992099 - 2¹ = 68213992097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68213992097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3100635994 + ... + 3100636015.

It is an arithmetic number, because the mean of its divisors is an integer number (18603816030).

Almost surely, 2^68213992099 is an apocalyptic number.

68213992099 is a deficient number, since it is larger than the sum of its proper divisors (6201272021).

68213992099 is a wasteful number, since it uses less digits than its factorization.

68213992099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6201272020.

The product of its (nonzero) digits is 3779136, while the sum is 58.

The spelling of 68213992099 in words is "sixty-eight billion, two hundred thirteen million, nine hundred ninety-two thousand, ninety-nine".