5621515440 has 80 divisors (see below), whose sum is σ = 18027640800. Its totient is φ = 1447376896.

The previous prime is 5621515373. The next prime is 5621515447. The reversal of 5621515440 is 445151265.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (5621515447) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 396885 + ... + 410804.

It is an arithmetic number, because the mean of its divisors is an integer number (225345510).

Almost surely, 2^5621515440 is an apocalyptic number.

It is an amenable number.

5621515440 is an abundant number, since it is smaller than the sum of its proper divisors (12406125360).

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

5621515440 is a wasteful number, since it uses less digits than its factorization.

5621515440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807734 (or 807728 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 5621515440 is about 74976.7660012087. The cubic root of 5621515440 is about 1778.0793405910.

The spelling of 5621515440 in words is "five billion, six hundred twenty-one million, five hundred fifteen thousand, four hundred forty".