68668028084807 has 4 divisors (see below), whose sum is σ = 68691203257560. Its totient is φ = 68644852912056.

The previous prime is 68668028084801. The next prime is 68668028084881. The reversal of 68668028084807 is 70848082086686.

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 68668028084807 - 2⁴ = 68668028084791 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 (68668028084801) 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, 11587581932 + ... + 11587587857.

It is an arithmetic number, because the mean of its divisors is an integer number (17172800814390).

Almost surely, 2^{68668028084807} is an apocalyptic number.

68668028084807 is a deficient number, since it is larger than the sum of its proper divisors (23175172753).

68668028084807 is a wasteful number, since it uses less digits than its factorization.

68668028084807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23175172752.

The product of its (nonzero) digits is 396361728, while the sum is 71.

The spelling of 68668028084807 in words is "sixty-eight trillion, six hundred sixty-eight billion, twenty-eight million, eighty-four thousand, eight hundred seven".