26666466666 has 64 divisors (see below), whose sum is σ = 62670053376. Its totient is φ = 7405603200.

The previous prime is 26666466661. The next prime is 26666466677. The reversal of 26666466666 is 66666466662.

It is a super-2 number, since 2×26666466666² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26666466661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 438091 + ... + 495233.

It is an arithmetic number, because the mean of its divisors is an integer number (979219584).

Almost surely, 2^26666466666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26666466666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31335026688).

26666466666 is an abundant number, since it is smaller than the sum of its proper divisors (36003586710).

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

26666466666 is a wasteful number, since it uses less digits than its factorization.

26666466666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57467.

The product of its digits is 80621568, while the sum is 60.

It can be divided in two parts, 266664 and 66666, that multiplied together give a square (17777422224 = 133332²).

The spelling of 26666466666 in words is "twenty-six billion, six hundred sixty-six million, four hundred sixty-six thousand, six hundred sixty-six".