26389086909696 has 864 divisors, whose sum is σ = 91337368362240. Its totient is φ = 7453302718464.

The previous prime is 26389086909629. The next prime is 26389086909697. The reversal of 26389086909696 is 69690968098362.

26389086909696 is a `hidden beast` number, since 2 + 6 + 389 + 0 + 8 + 69 + 0 + 96 + 96 = 666.

It is a tau number, because it is divible by the number of its divisors (864).

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26389086909697) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 30792399700 + ... + 30792400556.

Almost surely, 2^{26389086909696} 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 26389086909696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45668684181120).

26389086909696 is an abundant number, since it is smaller than the sum of its proper divisors (64948281452544).

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

26389086909696 is an frugal number, since it uses more digits than its factorization.

26389086909696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010 (or 966 counting only the distinct ones).

The product of its (nonzero) digits is 3265173504, while the sum is 81.

The spelling of 26389086909696 in words is "twenty-six trillion, three hundred eighty-nine billion, eighty-six million, nine hundred nine thousand, six hundred ninety-six".