26490444400 has 480 divisors, whose sum is σ = 78851203200. Its totient is φ = 8360755200.

The previous prime is 26490444391. The next prime is 26490444401. The reversal of 26490444400 is 444409462.

It is a self number, because there is not a number n which added to its sum of digits gives 26490444400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26490444401) 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, 243031546 + ... + 243031654.

It is an arithmetic number, because the mean of its divisors is an integer number (164273340).

Almost surely, 2^26490444400 is an apocalyptic number.

26490444400 is a gapful number since it is divisible by the number (20) 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 26490444400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39425601600).

26490444400 is an abundant number, since it is smaller than the sum of its proper divisors (52360758800).

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

26490444400 is a wasteful number, since it uses less digits than its factorization.

26490444400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 266 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 37.

The spelling of 26490444400 in words is "twenty-six billion, four hundred ninety million, four hundred forty-four thousand, four hundred".