213598781399 has 2 divisors, whose sum is σ = 213598781400. Its totient is φ = 213598781398.

The previous prime is 213598781393. The next prime is 213598781437. The reversal of 213598781399 is 993187895312.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213598781399 - 2²⁴ = 213582004183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213598781393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106799390699 + 106799390700.

It is an arithmetic number, because the mean of its divisors is an integer number (106799390700).

Almost surely, 2^213598781399 is an apocalyptic number.

213598781399 is a deficient number, since it is larger than the sum of its proper divisors (1).

213598781399 is an equidigital number, since it uses as much as digits as its factorization.

213598781399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29393280, while the sum is 65.

The spelling of 213598781399 in words is "two hundred thirteen billion, five hundred ninety-eight million, seven hundred eighty-one thousand, three hundred ninety-nine".