2666220462066 has 16 divisors (see below), whose sum is σ = 6094218199104. Its totient is φ = 761777274864.

The previous prime is 2666220462053. The next prime is 2666220462071. The reversal of 2666220462066 is 6602640226662.

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, 31740719745 + ... + 31740719828.

It is an arithmetic number, because the mean of its divisors is an integer number (380888637444).

Almost surely, 2^{2666220462066} is an apocalyptic number.

2666220462066 is an abundant number, since it is smaller than the sum of its proper divisors (3427997737038).

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

2666220462066 is a wasteful number, since it uses less digits than its factorization.

2666220462066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63481439585.

The product of its (nonzero) digits is 2985984, while the sum is 48.

The spelling of 2666220462066 in words is "two trillion, six hundred sixty-six billion, two hundred twenty million, four hundred sixty-two thousand, sixty-six".