213169636843 has 2 divisors, whose sum is σ = 213169636844. Its totient is φ = 213169636842.

The previous prime is 213169636793. The next prime is 213169636877. The reversal of 213169636843 is 348636961312.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213169636843 - 2⁹ = 213169636331 is a prime.

It is not a weakly prime, because it can be changed into another prime (213169636643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106584818421 + 106584818422.

It is an arithmetic number, because the mean of its divisors is an integer number (106584818422).

Almost surely, 2^213169636843 is an apocalyptic number.

213169636843 is a deficient number, since it is larger than the sum of its proper divisors (1).

213169636843 is an equidigital number, since it uses as much as digits as its factorization.

213169636843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3359232, while the sum is 52.

The spelling of 213169636843 in words is "two hundred thirteen billion, one hundred sixty-nine million, six hundred thirty-six thousand, eight hundred forty-three".