26346402512 has 80 divisors (see below), whose sum is σ = 53190881280. Its totient is φ = 12628377600.

The previous prime is 26346402491. The next prime is 26346402553. The reversal of 26346402512 is 21520464362.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41101712 + ... + 41102352.

It is an arithmetic number, because the mean of its divisors is an integer number (664886016).

Almost surely, 2^26346402512 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 26346402512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26595440640).

26346402512 is an abundant number, since it is smaller than the sum of its proper divisors (26844478768).

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

26346402512 is a wasteful number, since it uses less digits than its factorization.

26346402512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332 (or 1326 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 26346402512 its reverse (21520464362), we get a palindrome (47866866874).

The spelling of 26346402512 in words is "twenty-six billion, three hundred forty-six million, four hundred two thousand, five hundred twelve".