5187440640 has 104 divisors (see below), whose sum is σ = 16597980288. Its totient is φ = 1383301120.

The previous prime is 5187440563. The next prime is 5187440641. The reversal of 5187440640 is 460447815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5187440641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19225 + ... + 103655.

Almost surely, 2^5187440640 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 5187440640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8298990144).

5187440640 is an abundant number, since it is smaller than the sum of its proper divisors (11410539648).

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

5187440640 is an equidigital number, since it uses as much as digits as its factorization.

5187440640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84463 (or 84441 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 5187440640 is about 72023.8893701250. The cubic root of 5187440640 is about 1731.0822902441.

The spelling of 5187440640 in words is "five billion, one hundred eighty-seven million, four hundred forty thousand, six hundred forty".