68516216466 has 32 divisors (see below), whose sum is σ = 141803645760. Its totient is φ = 22044047424.

The previous prime is 68516216449. The next prime is 68516216501. The reversal of 68516216466 is 66461261586.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 488116 + ... + 612608.

It is an arithmetic number, because the mean of its divisors is an integer number (4431363930).

Almost surely, 2^68516216466 is an apocalyptic number.

68516216466 is an abundant number, since it is smaller than the sum of its proper divisors (73287429294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68516216466 is a wasteful number, since it uses less digits than its factorization.

68516216466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127690.

The product of its digits is 2488320, while the sum is 51.

The spelling of 68516216466 in words is "sixty-eight billion, five hundred sixteen million, two hundred sixteen thousand, four hundred sixty-six".