213845457227 has 4 divisors (see below), whose sum is σ = 213849211440. Its totient is φ = 213841703016.

The previous prime is 213845457223. The next prime is 213845457229. The reversal of 213845457227 is 722754548312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213845457227 - 2² = 213845457223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213845457223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1790327 + ... + 1906032.

It is an arithmetic number, because the mean of its divisors is an integer number (53462302860).

Almost surely, 2^213845457227 is an apocalyptic number.

213845457227 is a deficient number, since it is larger than the sum of its proper divisors (3754213).

213845457227 is an equidigital number, since it uses as much as digits as its factorization.

213845457227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3754212.

The product of its digits is 3763200, while the sum is 50.

The spelling of 213845457227 in words is "two hundred thirteen billion, eight hundred forty-five million, four hundred fifty-seven thousand, two hundred twenty-seven".