26664246664260 has 96 divisors (see below), whose sum is σ = 75948916982400. Its totient is φ = 6987776302080.

The previous prime is 26664246664247. The next prime is 26664246664261. The reversal of 26664246664260 is 6246664246662.

It is a super-2 number, since 2×26664246664260² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 26664246664194 and 26664246664203.

It is not an unprimeable number, because it can be changed into a prime (26664246664261) 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, 10233096 + ... + 12571584.

It is an arithmetic number, because the mean of its divisors is an integer number (791134551900).

Almost surely, 2^{26664246664260} is an apocalyptic number.

26664246664260 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 26664246664260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37974458491200).

26664246664260 is an abundant number, since it is smaller than the sum of its proper divisors (49284670318140).

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

26664246664260 is a wasteful number, since it uses less digits than its factorization.

26664246664260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2341781 (or 2341779 counting only the distinct ones).

The product of its (nonzero) digits is 143327232, while the sum is 60.

The spelling of 26664246664260 in words is "twenty-six trillion, six hundred sixty-four billion, two hundred forty-six million, six hundred sixty-four thousand, two hundred sixty".