5215808640 has 128 divisors (see below), whose sum is σ = 19000494720. Its totient is φ = 1192181760.

The previous prime is 5215808567. The next prime is 5215808651. The reversal of 5215808640 is 468085125.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180601 + ... + 207480.

It is an arithmetic number, because the mean of its divisors is an integer number (148441365).

Almost surely, 2^5215808640 is an apocalyptic number.

It is an amenable number.

5215808640 is an abundant number, since it is smaller than the sum of its proper divisors (13784686080).

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

5215808640 is a wasteful number, since it uses less digits than its factorization.

5215808640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388110 (or 388098 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 39.

The square root of 5215808640 is about 72220.5555226488. Note that the first 4 decimals coincide. The cubic root of 5215808640 is about 1734.2320835471.

The spelling of 5215808640 in words is "five billion, two hundred fifteen million, eight hundred eight thousand, six hundred forty".