213450173399 has 2 divisors, whose sum is σ = 213450173400. Its totient is φ = 213450173398.

The previous prime is 213450173389. The next prime is 213450173411. The reversal of 213450173399 is 993371054312.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213450173399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213450173329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106725086699 + 106725086700.

It is an arithmetic number, because the mean of its divisors is an integer number (106725086700).

Almost surely, 2^213450173399 is an apocalyptic number.

213450173399 is a deficient number, since it is larger than the sum of its proper divisors (1).

213450173399 is an equidigital number, since it uses as much as digits as its factorization.

213450173399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 612360, while the sum is 47.

The spelling of 213450173399 in words is "two hundred thirteen billion, four hundred fifty million, one hundred seventy-three thousand, three hundred ninety-nine".