26666669280 has 192 divisors, whose sum is σ = 87268104000. Its totient is φ = 6836551680.

The previous prime is 26666669279. The next prime is 26666669311. The reversal of 26666669280 is 8296666662.

It is a super-2 number, since 2×26666669280² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 26666669280.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3350746 + ... + 3358694.

It is an arithmetic number, because the mean of its divisors is an integer number (454521375).

Almost surely, 2^26666669280 is an apocalyptic number.

26666669280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26666669280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43634052000).

26666669280 is an abundant number, since it is smaller than the sum of its proper divisors (60601434720).

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

26666669280 is a wasteful number, since it uses less digits than its factorization.

26666669280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8237 (or 8229 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 57.

The spelling of 26666669280 in words is "twenty-six billion, six hundred sixty-six million, six hundred sixty-nine thousand, two hundred eighty".