68666516206 has 8 divisors (see below), whose sum is σ = 103000920480. Its totient is φ = 34332876048.

The previous prime is 68666516189. The next prime is 68666516209. The reversal of 68666516206 is 60261566686.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68666516209) 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, 170395 + ... + 407881.

It is an arithmetic number, because the mean of its divisors is an integer number (12875115060).

Almost surely, 2^68666516206 is an apocalyptic number.

68666516206 is a deficient number, since it is larger than the sum of its proper divisors (34334404274).

68666516206 is a wasteful number, since it uses less digits than its factorization.

68666516206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382058.

The product of its (nonzero) digits is 3732480, while the sum is 52.

The spelling of 68666516206 in words is "sixty-eight billion, six hundred sixty-six million, five hundred sixteen thousand, two hundred six".