26343497688 has 128 divisors (see below), whose sum is σ = 72230400000. Its totient is φ = 7982876160.

The previous prime is 26343497641. The next prime is 26343497693. The reversal of 26343497688 is 88679434362.

It is a super-2 number, since 2×26343497688² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 781813 + ... + 814811.

It is an arithmetic number, because the mean of its divisors is an integer number (564300000).

Almost surely, 2^26343497688 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 26343497688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36115200000).

26343497688 is an abundant number, since it is smaller than the sum of its proper divisors (45886902312).

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

26343497688 is a wasteful number, since it uses less digits than its factorization.

26343497688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33105 (or 33101 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 60.

The spelling of 26343497688 in words is "twenty-six billion, three hundred forty-three million, four hundred ninety-seven thousand, six hundred eighty-eight".