26666826668 has 24 divisors (see below), whose sum is σ = 47357662464. Its totient is φ = 13136331600.

The previous prime is 26666826649. The next prime is 26666826679. The reversal of 26666826668 is 86662866662.

It is a super-2 number, since 2×26666826668² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26666826668.

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, 378503 + ... + 443393.

It is an arithmetic number, because the mean of its divisors is an integer number (1973235936).

Almost surely, 2^26666826668 is an apocalyptic number.

It is an amenable number.

26666826668 is a deficient number, since it is larger than the sum of its proper divisors (20690835796).

26666826668 is a wasteful number, since it uses less digits than its factorization.

26666826668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66413 (or 66411 counting only the distinct ones).

The product of its digits is 71663616, while the sum is 62.

The spelling of 26666826668 in words is "twenty-six billion, six hundred sixty-six million, eight hundred twenty-six thousand, six hundred sixty-eight".