213686853379 has 4 divisors (see below), whose sum is σ = 214628205384. Its totient is φ = 212745501376.

The previous prime is 213686853377. The next prime is 213686853389. The reversal of 213686853379 is 973358686312.

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 213686853379 - 2¹ = 213686853377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213686853377) 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, 470675662 + ... + 470676115.

It is an arithmetic number, because the mean of its divisors is an integer number (53657051346).

Almost surely, 2^213686853379 is an apocalyptic number.

213686853379 is a deficient number, since it is larger than the sum of its proper divisors (941352005).

213686853379 is an equidigital number, since it uses as much as digits as its factorization.

213686853379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941352004.

The product of its digits is 39191040, while the sum is 61.

The spelling of 213686853379 in words is "two hundred thirteen billion, six hundred eighty-six million, eight hundred fifty-three thousand, three hundred seventy-nine".