66286688668266 has 32 divisors (see below), whose sum is σ = 147988886335488. Its totient is φ = 19619738717040.

The previous prime is 66286688668201. The next prime is 66286688668283.

66286688668266 is nontrivially palindromic in base 10.

It is a super-3 number, since 3×66286688668266³ (a number of 42 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11678413066 + ... + 11678418741.

It is an arithmetic number, because the mean of its divisors is an integer number (4624652697984).

Almost surely, 2^{66286688668266} is an apocalyptic number.

66286688668266 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

66286688668266 is an abundant number, since it is smaller than the sum of its proper divisors (81702197667222).

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

66286688668266 is a wasteful number, since it uses less digits than its factorization.

66286688668266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23356831866.

The product of its digits is 27518828544, while the sum is 84.

The spelling of 66286688668266 in words is "sixty-six trillion, two hundred eighty-six billion, six hundred eighty-eight million, six hundred sixty-eight thousand, two hundred sixty-six".