5405805648 has 80 divisors (see below), whose sum is σ = 15541237440. Its totient is φ = 1799081856.

The previous prime is 5405805619. The next prime is 5405805659. The reversal of 5405805648 is 8465085045.

5405805648 is a `hidden beast` number, since 5 + 4 + 0 + 5 + 80 + 564 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 272515 + ... + 291677.

It is an arithmetic number, because the mean of its divisors is an integer number (194265468).

Almost surely, 2^5405805648 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 5405805648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7770618720).

5405805648 is an abundant number, since it is smaller than the sum of its proper divisors (10135431792).

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

5405805648 is a wasteful number, since it uses less digits than its factorization.

5405805648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19833 (or 19821 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 45.

The square root of 5405805648 is about 73524.1841029195. The cubic root of 5405805648 is about 1755.0391517309.

The spelling of 5405805648 in words is "five billion, four hundred five million, eight hundred five thousand, six hundred forty-eight".