215312466304 has 32 divisors (see below), whose sum is σ = 461938407840. Its totient is φ = 99374983680.

The previous prime is 215312466227. The next prime is 215312466353. The reversal of 215312466304 is 403664213512.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×215312466304² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64695592 + ... + 64698919.

It is an arithmetic number, because the mean of its divisors is an integer number (14435575245).

Almost surely, 2^215312466304 is an apocalyptic number.

It is an amenable number.

215312466304 is an abundant number, since it is smaller than the sum of its proper divisors (246625941536).

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

215312466304 is a wasteful number, since it uses less digits than its factorization.

215312466304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129394538 (or 129394526 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

Adding to 215312466304 its reverse (403664213512), we get a palindrome (618976679816).

The spelling of 215312466304 in words is "two hundred fifteen billion, three hundred twelve million, four hundred sixty-six thousand, three hundred four".