68502006667 has 4 divisors (see below), whose sum is σ = 68507127976. Its totient is φ = 68496885360.

The previous prime is 68502006659. The next prime is 68502006679. The reversal of 68502006667 is 76660020586.

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 68502006667 - 2³ = 68502006659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68502006767) 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, 2540538 + ... + 2567359.

It is an arithmetic number, because the mean of its divisors is an integer number (17126781994).

Almost surely, 2^68502006667 is an apocalyptic number.

68502006667 is a deficient number, since it is larger than the sum of its proper divisors (5121309).

68502006667 is a wasteful number, since it uses less digits than its factorization.

68502006667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5121308.

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 68502006667 in words is "sixty-eight billion, five hundred two million, six thousand, six hundred sixty-seven".