68090835799999 has 4 divisors (see below), whose sum is σ = 68252571752440. Its totient is φ = 67929099847560.

The previous prime is 68090835799969. The next prime is 68090835800027. The reversal of 68090835799999 is 99999753809086.

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 68090835799999 - 2⁷ = 68090835799871 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 (68090835799919) 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, 80867975589 + ... + 80867976430.

It is an arithmetic number, because the mean of its divisors is an integer number (17063142938110).

Almost surely, 2^{68090835799999} is an apocalyptic number.

68090835799999 is a deficient number, since it is larger than the sum of its proper divisors (161735952441).

68090835799999 is a wasteful number, since it uses less digits than its factorization.

68090835799999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161735952440.

The product of its (nonzero) digits is 21427701120, while the sum is 91.

The spelling of 68090835799999 in words is "sixty-eight trillion, ninety billion, eight hundred thirty-five million, seven hundred ninety-nine thousand, nine hundred ninety-nine".