5781266784 has 120 divisors (see below), whose sum is σ = 17027342640. Its totient is φ = 1924280064.

The previous prime is 5781266779. The next prime is 5781266791. The reversal of 5781266784 is 4876621875.

5781266784 is a `hidden beast` number, since 578 + 1 + 2 + 6 + 67 + 8 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 5781266784.

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 19 ways as a sum of consecutive naturals, for example, 2546802 + ... + 2549070.

It is an arithmetic number, because the mean of its divisors is an integer number (141894522).

Almost surely, 2^5781266784 is an apocalyptic number.

5781266784 is a gapful number since it is divisible by the number (54) 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 5781266784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8513671320).

5781266784 is an abundant number, since it is smaller than the sum of its proper divisors (11246075856).

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

5781266784 is a wasteful number, since it uses less digits than its factorization.

5781266784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3274 (or 3257 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 54.

The square root of 5781266784 is about 76034.6419995518. The cubic root of 5781266784 is about 1794.7653248550.

The spelling of 5781266784 in words is "five billion, seven hundred eighty-one million, two hundred sixty-six thousand, seven hundred eighty-four".