26669406568 has 32 divisors (see below), whose sum is σ = 59633458560. Its totient is φ = 10932799680.

The previous prime is 26669406521. The next prime is 26669406581. The reversal of 26669406568 is 86560496662.

It is a super-2 number, since 2×26669406568² (a number of 22 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 10351743 + ... + 10354318.

It is an arithmetic number, because the mean of its divisors is an integer number (1863545580).

Almost surely, 2^26669406568 is an apocalyptic number.

26669406568 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

26669406568 is an abundant number, since it is smaller than the sum of its proper divisors (32964051992).

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

26669406568 is a wasteful number, since it uses less digits than its factorization.

26669406568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20706097 (or 20706093 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 58.

The spelling of 26669406568 in words is "twenty-six billion, six hundred sixty-nine million, four hundred six thousand, five hundred sixty-eight".