68307061939 has 8 divisors (see below), whose sum is σ = 72613276848. Its totient is φ = 64032864000.

The previous prime is 68307061931. The next prime is 68307061969. The reversal of 68307061939 is 93916070386.

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

It is a cyclic number.

It is not a de Polignac number, because 68307061939 - 2³ = 68307061931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68307061931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7999842 + ... + 8008375.

It is an arithmetic number, because the mean of its divisors is an integer number (9076659606).

Almost surely, 2^68307061939 is an apocalyptic number.

68307061939 is a deficient number, since it is larger than the sum of its proper divisors (4306214909).

68307061939 is a wasteful number, since it uses less digits than its factorization.

68307061939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16008485.

The product of its (nonzero) digits is 1469664, while the sum is 52.

The spelling of 68307061939 in words is "sixty-eight billion, three hundred seven million, sixty-one thousand, nine hundred thirty-nine".