213099389543 has 2 divisors, whose sum is σ = 213099389544. Its totient is φ = 213099389542.

The previous prime is 213099389509. The next prime is 213099389549. The reversal of 213099389543 is 345983990312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213099389543 - 2³² = 208804422247 is a prime.

It is a super-2 number, since 2×213099389543² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213099389549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106549694771 + 106549694772.

It is an arithmetic number, because the mean of its divisors is an integer number (106549694772).

Almost surely, 2^213099389543 is an apocalyptic number.

213099389543 is a deficient number, since it is larger than the sum of its proper divisors (1).

213099389543 is an equidigital number, since it uses as much as digits as its factorization.

213099389543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6298560, while the sum is 56.

The spelling of 213099389543 in words is "two hundred thirteen billion, ninety-nine million, three hundred eighty-nine thousand, five hundred forty-three".