2066868468138 has 16 divisors (see below), whose sum is σ = 4221688786560. Its totient is φ = 674297514336.

The previous prime is 2066868468103. The next prime is 2066868468179. The reversal of 2066868468138 is 8318648686602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3664660123 + ... + 3664660686.

It is an arithmetic number, because the mean of its divisors is an integer number (263855549160).

Almost surely, 2^{2066868468138} is an apocalyptic number.

2066868468138 is an abundant number, since it is smaller than the sum of its proper divisors (2154820318422).

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

2066868468138 is a wasteful number, since it uses less digits than its factorization.

2066868468138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7329320861.

The product of its (nonzero) digits is 127401984, while the sum is 66.

The spelling of 2066868468138 in words is "two trillion, sixty-six billion, eight hundred sixty-eight million, four hundred sixty-eight thousand, one hundred thirty-eight".