68393297407 has 4 divisors (see below), whose sum is σ = 68634970120. Its totient is φ = 68151624696.

The previous prime is 68393297377. The next prime is 68393297471. The reversal of 68393297407 is 70479239386.

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 68393297407 - 2²³ = 68384908799 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 (68393297107) 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, 120835932 + ... + 120836497.

It is an arithmetic number, because the mean of its divisors is an integer number (17158742530).

Almost surely, 2^68393297407 is an apocalyptic number.

68393297407 is a deficient number, since it is larger than the sum of its proper divisors (241672713).

68393297407 is a wasteful number, since it uses less digits than its factorization.

68393297407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241672712.

The product of its (nonzero) digits is 13716864, while the sum is 58.

The spelling of 68393297407 in words is "sixty-eight billion, three hundred ninety-three million, two hundred ninety-seven thousand, four hundred seven".