212854773613 has 4 divisors (see below), whose sum is σ = 212857672860. Its totient is φ = 212851874368.

The previous prime is 212854773601. The next prime is 212854773667. The reversal of 212854773613 is 316377458212.

212854773613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 197439812964 + 15414960649 = 444342^2 + 124157^2 .

It is a cyclic number.

It is not a de Polignac number, because 212854773613 - 2⁵ = 212854773581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212854773683) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1336558 + ... + 1487311.

It is an arithmetic number, because the mean of its divisors is an integer number (53214418215).

Almost surely, 2^212854773613 is an apocalyptic number.

It is an amenable number.

212854773613 is a deficient number, since it is larger than the sum of its proper divisors (2899247).

212854773613 is an equidigital number, since it uses as much as digits as its factorization.

212854773613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2899246.

The product of its digits is 1693440, while the sum is 49.

The spelling of 212854773613 in words is "two hundred twelve billion, eight hundred fifty-four million, seven hundred seventy-three thousand, six hundred thirteen".