213820899327 has 18 divisors (see below), whose sum is σ = 359277294168. Its totient is φ = 122183370792.

The previous prime is 213820899293. The next prime is 213820899329. The reversal of 213820899327 is 723998028312.

213820899327 is a `hidden beast` number, since 21 + 3 + 8 + 208 + 99 + 327 = 666.

It is not a de Polignac number, because 213820899327 - 2¹⁰ = 213820898303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213820899329) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 242426883 + ... + 242427764.

It is an arithmetic number, because the mean of its divisors is an integer number (19959849676).

Almost surely, 2^213820899327 is an apocalyptic number.

213820899327 is a deficient number, since it is larger than the sum of its proper divisors (145456394841).

213820899327 is a wasteful number, since it uses less digits than its factorization.

213820899327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484854667 (or 484854657 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 213820899327 in words is "two hundred thirteen billion, eight hundred twenty million, eight hundred ninety-nine thousand, three hundred twenty-seven".