26447041728 has 140 divisors (see below), whose sum is σ = 78616588512. Its totient is φ = 8791027200.

The previous prime is 26447041679. The next prime is 26447041741. The reversal of 26447041728 is 82714074462.

26447041728 is a `hidden beast` number, since 2 + 6 + 4 + 470 + 4 + 172 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1895578 + ... + 1909478.

Almost surely, 2^26447041728 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 26447041728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39308294256).

26447041728 is an abundant number, since it is smaller than the sum of its proper divisors (52169546784).

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

26447041728 is a wasteful number, since it uses less digits than its factorization.

26447041728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14292 (or 14273 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 45.

The spelling of 26447041728 in words is "twenty-six billion, four hundred forty-seven million, forty-one thousand, seven hundred twenty-eight".