26390943072 has 336 divisors, whose sum is σ = 88844636160. Its totient is φ = 7641133056.

The previous prime is 26390943067. The next prime is 26390943079. The reversal of 26390943072 is 27034909362.

26390943072 is a `hidden beast` number, since 2 + 63 + 90 + 9 + 430 + 72 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26390943079) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 5152929 + ... + 5158047.

It is an arithmetic number, because the mean of its divisors is an integer number (264418560).

Almost surely, 2^26390943072 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 26390943072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44422318080).

26390943072 is an abundant number, since it is smaller than the sum of its proper divisors (62453693088).

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

26390943072 is a wasteful number, since it uses less digits than its factorization.

26390943072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5177 (or 5154 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 45.

The spelling of 26390943072 in words is "twenty-six billion, three hundred ninety million, nine hundred forty-three thousand, seventy-two".