26139744768 has 80 divisors (see below), whose sum is σ = 69693994656. Its totient is φ = 8706232320.

The previous prime is 26139744751. The next prime is 26139744769. The reversal of 26139744768 is 86744793162.

It is not an unprimeable number, because it can be changed into a prime (26139744769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2115055 + ... + 2127377.

Almost surely, 2^26139744768 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 26139744768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34846997328).

26139744768 is an abundant number, since it is smaller than the sum of its proper divisors (43554249888).

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

26139744768 is a wasteful number, since it uses less digits than its factorization.

26139744768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13725 (or 13709 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 57.

The spelling of 26139744768 in words is "twenty-six billion, one hundred thirty-nine million, seven hundred forty-four thousand, seven hundred sixty-eight".