215671075216 has 15 divisors (see below), whose sum is σ = 417866307393. Its totient is φ = 107834608800.

The previous prime is 215671075211. The next prime is 215671075271. The reversal of 215671075216 is 612570176512.

The square root of 215671075216 is 464404.

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

It can be written as a sum of positive squares in only one way, i.e., 3113193616 + 212557881600 = 55796^2 + 461040^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215671075211) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1799566 + ... + 1915666.

Almost surely, 2^215671075216 is an apocalyptic number.

215671075216 is the 464404-th square number.

It is an amenable number.

215671075216 is a deficient number, since it is larger than the sum of its proper divisors (202195232177).

215671075216 is an frugal number, since it uses more digits than its factorization.

215671075216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232210 (or 116103 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 43.

The spelling of 215671075216 in words is "two hundred fifteen billion, six hundred seventy-one million, seventy-five thousand, two hundred sixteen".