212451434046 has 48 divisors (see below), whose sum is σ = 479773532160. Its totient is φ = 67867336080.

The previous prime is 212451434029. The next prime is 212451434071. The reversal of 212451434046 is 640434154212.

212451434046 is a `hidden beast` number, since 2 + 1 + 245 + 1 + 4 + 3 + 404 + 6 = 666.

It is a super-2 number, since 2×212451434046² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212451434046.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1790766 + ... + 1905713.

It is an arithmetic number, because the mean of its divisors is an integer number (9995281920).

Almost surely, 2^212451434046 is an apocalyptic number.

212451434046 is an abundant number, since it is smaller than the sum of its proper divisors (267322098114).

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

212451434046 is a wasteful number, since it uses less digits than its factorization.

212451434046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3696621 (or 3696618 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

Adding to 212451434046 its reverse (640434154212), we get a palindrome (852885588258).

The spelling of 212451434046 in words is "two hundred twelve billion, four hundred fifty-one million, four hundred thirty-four thousand, forty-six".