26538704688 has 80 divisors (see below), whose sum is σ = 71245440000. Its totient is φ = 8503345920.

The previous prime is 26538704671. The next prime is 26538704729. The reversal of 26538704688 is 88640783562.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161863 + ... + 281561.

It is an arithmetic number, because the mean of its divisors is an integer number (890568000).

Almost surely, 2^26538704688 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 26538704688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35622720000).

26538704688 is an abundant number, since it is smaller than the sum of its proper divisors (44706735312).

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

26538704688 is a wasteful number, since it uses less digits than its factorization.

26538704688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119890 (or 119884 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 57.

The spelling of 26538704688 in words is "twenty-six billion, five hundred thirty-eight million, seven hundred four thousand, six hundred eighty-eight".