2666933386688 has 56 divisors (see below), whose sum is σ = 5466195807744. Its totient is φ = 1289675923200.

The previous prime is 2666933386673. The next prime is 2666933386697. The reversal of 2666933386688 is 8866833396662.

It is a super-2 number, since 2×2666933386688² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

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, 2904143 + ... + 3710513.

It is an arithmetic number, because the mean of its divisors is an integer number (97610639424).

Almost surely, 2^{2666933386688} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2666933386688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2733097903872).

2666933386688 is an abundant number, since it is smaller than the sum of its proper divisors (2799262421056).

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

2666933386688 is a wasteful number, since it uses less digits than its factorization.

2666933386688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808081 (or 808071 counting only the distinct ones).

The product of its digits is 1934917632, while the sum is 74.

The spelling of 2666933386688 in words is "two trillion, six hundred sixty-six billion, nine hundred thirty-three million, three hundred eighty-six thousand, six hundred eighty-eight".