213062548681 has 4 divisors (see below), whose sum is σ = 213067766164. Its totient is φ = 213057331200.

The previous prime is 213062548663. The next prime is 213062548703. The reversal of 213062548681 is 186845260312.

213062548681 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 183938054400 + 29124494281 = 428880^2 + 170659^2 .

It is a cyclic number.

It is not a de Polignac number, because 213062548681 - 2¹¹ = 213062546633 is a prime.

It is a super-2 number, since 2×213062548681² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213062548481) 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, 2547000 + ... + 2629321.

It is an arithmetic number, because the mean of its divisors is an integer number (53266941541).

Almost surely, 2^213062548681 is an apocalyptic number.

It is an amenable number.

213062548681 is a deficient number, since it is larger than the sum of its proper divisors (5217483).

213062548681 is an equidigital number, since it uses as much as digits as its factorization.

213062548681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5217482.

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 213062548681 in words is "two hundred thirteen billion, sixty-two million, five hundred forty-eight thousand, six hundred eighty-one".