26442806400 has 720 divisors, whose sum is σ = 103951050390. Its totient is φ = 6617825280.

The previous prime is 26442806371. The next prime is 26442806461. The reversal of 26442806400 is 460824462.

It is a happy number.

26442806400 is a `hidden beast` number, since 2 + 6 + 4 + 4 + 2 + 8 + 0 + 640 + 0 = 666.

It can be written as a sum of positive squares in 9 ways, for example, as 6057820224 + 20384986176 = 77832^2 + 142776^2 .

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 74908624 + ... + 74908976.

Almost surely, 2^26442806400 is an apocalyptic number.

26442806400 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 26442806400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51975525195).

26442806400 is an abundant number, since it is smaller than the sum of its proper divisors (77508243990).

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

26442806400 is a wasteful number, since it uses less digits than its factorization.

26442806400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 36.

The spelling of 26442806400 in words is "twenty-six billion, four hundred forty-two million, eight hundred six thousand, four hundred".