68591392399 has 8 divisors (see below), whose sum is σ = 69145190720. Its totient is φ = 68039805600.

The previous prime is 68591392381. The next prime is 68591392427. The reversal of 68591392399 is 99329319586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68591392399 is a prime.

It is a super-2 number, since 2×68591392399² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68591392399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68591392099) 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 7 ways as a sum of consecutive naturals, for example, 490572 + ... + 614689.

It is an arithmetic number, because the mean of its divisors is an integer number (8643148840).

Almost surely, 2^68591392399 is an apocalyptic number.

68591392399 is a deficient number, since it is larger than the sum of its proper divisors (553798321).

68591392399 is a wasteful number, since it uses less digits than its factorization.

68591392399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105761.

The product of its digits is 28343520, while the sum is 64.

The spelling of 68591392399 in words is "sixty-eight billion, five hundred ninety-one million, three hundred ninety-two thousand, three hundred ninety-nine".