212302463640 has 64 divisors (see below), whose sum is σ = 637024780800. Its totient is φ = 56603555712.

The previous prime is 212302463627. The next prime is 212302463641. The reversal of 212302463640 is 46364203212.

It is a super-2 number, since 2×212302463640² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212302463641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 501999 + ... + 822561.

It is an arithmetic number, because the mean of its divisors is an integer number (9953512200).

Almost surely, 2^212302463640 is an apocalyptic number.

212302463640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212302463640 is an abundant number, since it is smaller than the sum of its proper divisors (424722317160).

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

212302463640 is a wasteful number, since it uses less digits than its factorization.

212302463640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326096 (or 326092 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 212302463640 its reverse (46364203212), we get a palindrome (258666666852).

The spelling of 212302463640 in words is "two hundred twelve billion, three hundred two million, four hundred sixty-three thousand, six hundred forty".