5640880128 has 136 divisors (see below), whose sum is σ = 16206667008. Its totient is φ = 1734868992.

The previous prime is 5640880127. The next prime is 5640880171. The reversal of 5640880128 is 8210880465.

It is a self number, because there is not a number n which added to its sum of digits gives 5640880128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5640880123) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2554801 + ... + 2557007.

Almost surely, 2^5640880128 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 5640880128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8103333504).

5640880128 is an abundant number, since it is smaller than the sum of its proper divisors (10565786880).

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

5640880128 is an equidigital number, since it uses as much as digits as its factorization.

5640880128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2255 (or 2225 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 42.

The square root of 5640880128 is about 75105.7929057406. The cubic root of 5640880128 is about 1780.1186774385.

The spelling of 5640880128 in words is "five billion, six hundred forty million, eight hundred eighty thousand, one hundred twenty-eight".