215132702976 has 135 divisors (see below), whose sum is σ = 641686013353. Its totient is φ = 71688637440.

The previous prime is 215132702971. The next prime is 215132702987. The reversal of 215132702976 is 679207231512.

It is a happy number.

The square root of 215132702976 is 463824.

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

215132702976 is a `hidden beast` number, since 21 + 513 + 27 + 0 + 2 + 97 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 165955205376 + 49177497600 = 407376^2 + 221760^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215132702971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 66789046 + ... + 66792266.

Almost surely, 2^215132702976 is an apocalyptic number.

215132702976 is the 463824-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215132702976

215132702976 is an abundant number, since it is smaller than the sum of its proper divisors (426553310377).

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

215132702976 is an frugal number, since it uses more digits than its factorization.

215132702976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6470 (or 3226 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The spelling of 215132702976 in words is "two hundred fifteen billion, one hundred thirty-two million, seven hundred two thousand, nine hundred seventy-six".