26391768768 has 168 divisors, whose sum is σ = 78467407200. Its totient is φ = 8470941696.

The previous prime is 26391768727. The next prime is 26391768773. The reversal of 26391768768 is 86786719362.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6830005 + ... + 6833867.

It is an arithmetic number, because the mean of its divisors is an integer number (467067900).

Almost surely, 2^26391768768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26391768768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39233703600).

26391768768 is an abundant number, since it is smaller than the sum of its proper divisors (52075638432).

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

26391768768 is a wasteful number, since it uses less digits than its factorization.

26391768768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4319 (or 4306 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 63.

The spelling of 26391768768 in words is "twenty-six billion, three hundred ninety-one million, seven hundred sixty-eight thousand, seven hundred sixty-eight".