68450723339 has 16 divisors (see below), whose sum is σ = 69573621600. Its totient is φ = 67336372224.

The previous prime is 68450723281. The next prime is 68450723347. The reversal of 68450723339 is 93332705486.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 68450723339 - 2³² = 64155756043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68450723639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28795919 + ... + 28798295.

It is an arithmetic number, because the mean of its divisors is an integer number (4348351350).

Almost surely, 2^68450723339 is an apocalyptic number.

68450723339 is a deficient number, since it is larger than the sum of its proper divisors (1122898261).

68450723339 is a wasteful number, since it uses less digits than its factorization.

68450723339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3982.

The product of its (nonzero) digits is 3265920, while the sum is 50.

The spelling of 68450723339 in words is "sixty-eight billion, four hundred fifty million, seven hundred twenty-three thousand, three hundred thirty-nine".