2666666696288 has 72 divisors (see below), whose sum is σ = 6428571571800. Its totient is φ = 1082706766848.

The previous prime is 2666666696147. The next prime is 2666666696327. The reversal of 2666666696288 is 8826966666662.

It is a super-2 number, since 2×2666666696288² (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 11 ways as a sum of consecutive naturals, for example, 44724953 + ... + 44784536.

It is an arithmetic number, because the mean of its divisors is an integer number (89285716275).

Almost surely, 2^{2666666696288} is an apocalyptic number.

2666666696288 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2666666696288 is an abundant number, since it is smaller than the sum of its proper divisors (3761904875512).

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

2666666696288 is a wasteful number, since it uses less digits than its factorization.

2666666696288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89509532 (or 89509517 counting only the distinct ones).

The product of its digits is 3869835264, while the sum is 77.

The spelling of 2666666696288 in words is "two trillion, six hundred sixty-six billion, six hundred sixty-six million, six hundred ninety-six thousand, two hundred eighty-eight".