5781147840 has 672 divisors, whose sum is σ = 23485303296. Its totient is φ = 1291714560.

The previous prime is 5781147811. The next prime is 5781147859. The reversal of 5781147840 is 487411875.

5781147840 is a `hidden beast` number, since 578 + 1 + 1 + 4 + 78 + 4 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 19730734 + ... + 19731026.

It is an arithmetic number, because the mean of its divisors is an integer number (34948368).

Almost surely, 2^5781147840 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 5781147840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11742651648).

5781147840 is an abundant number, since it is smaller than the sum of its proper divisors (17704155456).

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

5781147840 is a wasteful number, since it uses less digits than its factorization.

5781147840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 45.

The square root of 5781147840 is about 76033.8598257382. The cubic root of 5781147840 is about 1794.7530162475.

The spelling of 5781147840 in words is "five billion, seven hundred eighty-one million, one hundred forty-seven thousand, eight hundred forty".