215674790464 has 63 divisors (see below), whose sum is σ = 497913933177. Its totient is φ = 92420907264.

The previous prime is 215674790453. The next prime is 215674790503. The reversal of 215674790464 is 464097476512.

It is a happy number.

The square root of 215674790464 is 464408.

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

215674790464 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 47089000000 + 168585790464 = 217000^2 + 410592^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 26002702 + ... + 26010994.

Almost surely, 2^215674790464 is an apocalyptic number.

215674790464 is the 464408-th square number.

It is an amenable number.

215674790464 is an abundant number, since it is smaller than the sum of its proper divisors (282239142713).

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

215674790464 is an frugal number, since it uses more digits than its factorization.

215674790464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16612 (or 8302 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 55.

The spelling of 215674790464 in words is "two hundred fifteen billion, six hundred seventy-four million, seven hundred ninety thousand, four hundred sixty-four".