215275584484 has 27 divisors (see below), whose sum is σ = 380280922203. Its totient is φ = 106633279872.

The previous prime is 215275584481. The next prime is 215275584527. The reversal of 215275584484 is 484485572512.

The square root of 215275584484 is 463978.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 75967486884 + 139308097600 = 275622^2 + 373240^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215275584481) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 104858002 + ... + 104860054.

Almost surely, 2^215275584484 is an apocalyptic number.

215275584484 is the 463978-th square number.

It is an amenable number.

215275584484 is a deficient number, since it is larger than the sum of its proper divisors (165005337719).

215275584484 is an frugal number, since it uses more digits than its factorization.

215275584484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4336 (or 2168 counting only the distinct ones).

The product of its digits is 14336000, while the sum is 55.

The spelling of 215275584484 in words is "two hundred fifteen billion, two hundred seventy-five million, five hundred eighty-four thousand, four hundred eighty-four".