213243544726 has 4 divisors (see below), whose sum is σ = 319865317092. Its totient is φ = 106621772362.

The previous prime is 213243544699. The next prime is 213243544753. The reversal of 213243544726 is 627445342312.

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

It is an interprime number because it is at equal distance from previous prime (213243544699) and next prime (213243544753).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 53310886180 + ... + 53310886183.

It is an arithmetic number, because the mean of its divisors is an integer number (79966329273).

Almost surely, 2^213243544726 is an apocalyptic number.

213243544726 is a deficient number, since it is larger than the sum of its proper divisors (106621772366).

213243544726 is a wasteful number, since it uses less digits than its factorization.

213243544726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106621772365.

The product of its digits is 967680, while the sum is 43.

The spelling of 213243544726 in words is "two hundred thirteen billion, two hundred forty-three million, five hundred forty-four thousand, seven hundred twenty-six".