26423940831984 has 120 divisors (see below), whose sum is σ = 74951400987840. Its totient is φ = 8688940056576.

The previous prime is 26423940831973. The next prime is 26423940831997. The reversal of 26423940831984 is 48913804932462.

26423940831984 is a `hidden beast` number, since 2 + 6 + 4 + 2 + 39 + 408 + 3 + 198 + 4 = 666.

It is a super-2 number, since 2×26423940831984² (a number of 28 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 23 ways as a sum of consecutive naturals, for example, 12109252 + ... + 14123804.

It is an arithmetic number, because the mean of its divisors is an integer number (624595008232).

Almost surely, 2^{26423940831984} is an apocalyptic number.

26423940831984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26423940831984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37475700493920).

26423940831984 is an abundant number, since it is smaller than the sum of its proper divisors (48527460155856).

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

26423940831984 is a wasteful number, since it uses less digits than its factorization.

26423940831984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2015799 (or 2015790 counting only the distinct ones).

The product of its (nonzero) digits is 71663616, while the sum is 63.

The spelling of 26423940831984 in words is "twenty-six trillion, four hundred twenty-three billion, nine hundred forty million, eight hundred thirty-one thousand, nine hundred eighty-four".