216386850276 has 135 divisors (see below), whose sum is σ = 580104437913. Its totient is φ = 70334308800.

The previous prime is 216386850271. The next prime is 216386850289. The reversal of 216386850276 is 672058683612.

The square root of 216386850276 is 465174.

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

216386850276 is a `hidden beast` number, since 2 + 1 + 6 + 3 + 8 + 68 + 502 + 76 = 666.

It can be written as a sum of positive squares in only one way, i.e., 181880072676 + 34506777600 = 426474^2 + 185760^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (216386850271) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 360044376 + ... + 360044976.

Almost surely, 2^216386850276 is an apocalyptic number.

216386850276 is the 465174-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216386850276

216386850276 is an abundant number, since it is smaller than the sum of its proper divisors (363717587637).

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

216386850276 is an frugal number, since it uses more digits than its factorization.

216386850276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304 (or 649 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

It can be divided in two parts, 2163868 and 50276, that added together give a square (2214144 = 1488²).

The spelling of 216386850276 in words is "two hundred sixteen billion, three hundred eighty-six million, eight hundred fifty thousand, two hundred seventy-six".