212500664613 has 48 divisors (see below), whose sum is σ = 325003311360. Its totient is φ = 133524433152.

The previous prime is 212500664591. The next prime is 212500664627. The reversal of 212500664613 is 316466005212.

212500664613 is a `hidden beast` number, since 2 + 1 + 2 + 5 + 0 + 0 + 6 + 646 + 1 + 3 = 666.

It is not a de Polignac number, because 212500664613 - 2⁶ = 212500664549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212500664653) 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 47 ways as a sum of consecutive naturals, for example, 5378256 + ... + 5417622.

It is an arithmetic number, because the mean of its divisors is an integer number (6770902320).

Almost surely, 2^212500664613 is an apocalyptic number.

212500664613 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

212500664613 is a deficient number, since it is larger than the sum of its proper divisors (112502646747).

212500664613 is a wasteful number, since it uses less digits than its factorization.

212500664613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39778 (or 39775 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

Adding to 212500664613 its reverse (316466005212), we get a palindrome (528966669825).

The spelling of 212500664613 in words is "two hundred twelve billion, five hundred million, six hundred sixty-four thousand, six hundred thirteen".