68868661440859 has 8 divisors (see below), whose sum is σ = 78889656595968. Its totient is φ = 58893320023080.

The previous prime is 68868661440829. The next prime is 68868661440863. The reversal of 68868661440859 is 95804416686886.

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 68868661440859 - 2⁵ = 68868661440827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68868661440829) 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, 11413431097 + ... + 11413437130.

It is an arithmetic number, because the mean of its divisors is an integer number (9861207074496).

Almost surely, 2^{68868661440859} is an apocalyptic number.

68868661440859 is a deficient number, since it is larger than the sum of its proper divisors (10020995155109).

68868661440859 is a wasteful number, since it uses less digits than its factorization.

68868661440859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22826868665.

The product of its (nonzero) digits is 3822059520, while the sum is 79.

The spelling of 68868661440859 in words is "sixty-eight trillion, eight hundred sixty-eight billion, six hundred sixty-one million, four hundred forty thousand, eight hundred fifty-nine".