26748665340 has 96 divisors (see below), whose sum is σ = 75706176000. Its totient is φ = 7055997696.

The previous prime is 26748665323. The next prime is 26748665341. The reversal of 26748665340 is 4356684762.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26748665341) 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, 7642911 + ... + 7646409.

It is an arithmetic number, because the mean of its divisors is an integer number (788606000).

Almost surely, 2^26748665340 is an apocalyptic number.

26748665340 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 26748665340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37853088000).

26748665340 is an abundant number, since it is smaller than the sum of its proper divisors (48957510660).

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

26748665340 is a wasteful number, since it uses less digits than its factorization.

26748665340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4851 (or 4849 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 51.

The spelling of 26748665340 in words is "twenty-six billion, seven hundred forty-eight million, six hundred sixty-five thousand, three hundred forty".