816216333252 has 24 divisors (see below), whose sum is σ = 1904539324800. Its totient is φ = 272067175776.

The previous prime is 816216333227. The next prime is 816216333271. The reversal of 816216333252 is 252333612618.

It is a super-3 number, since 3×816216333252³ (a number of 37 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106074 + ... + 1282062.

It is an arithmetic number, because the mean of its divisors is an integer number (79355805200).

Almost surely, 2^816216333252 is an apocalyptic number.

It is an amenable number.

816216333252 is an abundant number, since it is smaller than the sum of its proper divisors (1088322991548).

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

816216333252 is a wasteful number, since it uses less digits than its factorization.

816216333252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233835 (or 1233833 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The spelling of 816216333252 in words is "eight hundred sixteen billion, two hundred sixteen million, three hundred thirty-three thousand, two hundred fifty-two".