26668010857 has 8 divisors (see below), whose sum is σ = 28893386016. Its totient is φ = 24515598912.

The previous prime is 26668010851. The next prime is 26668010867. The reversal of 26668010857 is 75801086662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26668010857 - 2²⁷ = 26533793129 is a prime.

It is a super-2 number, since 2×26668010857² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26668010857.

It is not an unprimeable number, because it can be changed into a prime (26668010851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18240043 + ... + 18241504.

It is an arithmetic number, because the mean of its divisors is an integer number (3611673252).

Almost surely, 2^26668010857 is an apocalyptic number.

It is an amenable number.

26668010857 is a deficient number, since it is larger than the sum of its proper divisors (2225375159).

26668010857 is a wasteful number, since it uses less digits than its factorization.

26668010857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36481607.

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 26668010857 in words is "twenty-six billion, six hundred sixty-eight million, ten thousand, eight hundred fifty-seven".