213992273993 has 2 divisors, whose sum is σ = 213992273994. Its totient is φ = 213992273992.

The previous prime is 213992273977. The next prime is 213992274047. The reversal of 213992273993 is 399372299312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143741831689 + 70250442304 = 379133^2 + 265048^2 .

It is a cyclic number.

It is not a de Polignac number, because 213992273993 - 2⁴ = 213992273977 is a prime.

It is not a weakly prime, because it can be changed into another prime (213992273933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106996136996 + 106996136997.

It is an arithmetic number, because the mean of its divisors is an integer number (106996136997).

Almost surely, 2^213992273993 is an apocalyptic number.

It is an amenable number.

213992273993 is a deficient number, since it is larger than the sum of its proper divisors (1).

213992273993 is an equidigital number, since it uses as much as digits as its factorization.

213992273993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9920232, while the sum is 59.

The spelling of 213992273993 in words is "two hundred thirteen billion, nine hundred ninety-two million, two hundred seventy-three thousand, nine hundred ninety-three".