5444288640 has 448 divisors, whose sum is σ = 22315037760. Its totient is φ = 1243662336.

The previous prime is 5444288617. The next prime is 5444288653. The reversal of 5444288640 is 468824445.

5444288640 is a `hidden beast` number, since 544 + 4 + 28 + 86 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (448).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 3265087 + ... + 3266753.

Almost surely, 2^5444288640 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 5444288640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11157518880).

5444288640 is an abundant number, since it is smaller than the sum of its proper divisors (16870749120).

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

5444288640 is an equidigital number, since it uses as much as digits as its factorization.

5444288640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711 (or 1684 counting only the distinct ones).

The product of its (nonzero) digits is 983040, while the sum is 45.

The square root of 5444288640 is about 73785.4229506073. The cubic root of 5444288640 is about 1759.1939146133.

The spelling of 5444288640 in words is "five billion, four hundred forty-four million, two hundred eighty-eight thousand, six hundred forty".