2666696027904 has 108 divisors (see below), whose sum is σ = 7973510473656. Its totient is φ = 888898655232.

The previous prime is 2666696027867. The next prime is 2666696027929. The reversal of 2666696027904 is 4097206966662.

It is a tau number, because it is divible by the number of its divisors (108).

It is a super-2 number, since 2×2666696027904² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21371499 + ... + 21495914.

It is an arithmetic number, because the mean of its divisors is an integer number (73828800682).

Almost surely, 2^{2666696027904} is an apocalyptic number.

2666696027904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2666696027904 is an abundant number, since it is smaller than the sum of its proper divisors (5306814445752).

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

2666696027904 is an frugal number, since it uses more digits than its factorization.

2666696027904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42867444 (or 42867418 counting only the distinct ones).

The product of its (nonzero) digits is 70543872, while the sum is 63.

The spelling of 2666696027904 in words is "two trillion, six hundred sixty-six billion, six hundred ninety-six million, twenty-seven thousand, nine hundred four".