26439811008 has 112 divisors (see below), whose sum is σ = 76290708480. Its totient is φ = 8032287744.

The previous prime is 26439810953. The next prime is 26439811031. The reversal of 26439811008 is 80011893462.

It is a super-2 number, since 2×26439811008² (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 15 ways as a sum of consecutive naturals, for example, 130141 + ... + 264227.

It is an arithmetic number, because the mean of its divisors is an integer number (681167040).

Almost surely, 2^26439811008 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 26439811008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38145354240).

26439811008 is an abundant number, since it is smaller than the sum of its proper divisors (49850897472).

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

26439811008 is a wasteful number, since it uses less digits than its factorization.

26439811008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134194 (or 134184 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The spelling of 26439811008 in words is "twenty-six billion, four hundred thirty-nine million, eight hundred eleven thousand, eight".