216815342202 has 48 divisors (see below), whose sum is σ = 472689551880. Its totient is φ = 71822461056.

The previous prime is 216815342201. The next prime is 216815342297. The reversal of 216815342202 is 202243518612.

216815342202 is a `hidden beast` number, since 21 + 6 + 81 + 534 + 2 + 20 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 164251067841 + 52564274361 = 405279^2 + 229269^2 .

It is a super-2 number, since 2×216815342202² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (216815342201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7699324 + ... + 7727432.

Almost surely, 2^216815342202 is an apocalyptic number.

216815342202 is an abundant number, since it is smaller than the sum of its proper divisors (255874209678).

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

216815342202 is a wasteful number, since it uses less digits than its factorization.

216815342202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30767 (or 30764 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 216815342202 in words is "two hundred sixteen billion, eight hundred fifteen million, three hundred forty-two thousand, two hundred two".