26543946240 has 400 divisors, whose sum is σ = 108659688192. Its totient is φ = 6066855936.

The previous prime is 26543946179. The next prime is 26543946263. The reversal of 26543946240 is 4264934562.

26543946240 is a `hidden beast` number, since 2 + 6 + 543 + 9 + 4 + 62 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1442377 + ... + 1460663.

Almost surely, 2^26543946240 is an apocalyptic number.

26543946240 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 26543946240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54329844096).

26543946240 is an abundant number, since it is smaller than the sum of its proper divisors (82115741952).

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

26543946240 is an equidigital number, since it uses as much as digits as its factorization.

26543946240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18329 (or 18304 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The spelling of 26543946240 in words is "twenty-six billion, five hundred forty-three million, nine hundred forty-six thousand, two hundred forty".