213885857013 has 4 divisors (see below), whose sum is σ = 285181142688. Its totient is φ = 142590571340.

The previous prime is 213885856999. The next prime is 213885857023. The reversal of 213885857013 is 310758588312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213885857013 - 2⁴ = 213885856997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213885857023) 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, 35647642833 + ... + 35647642838.

It is an arithmetic number, because the mean of its divisors is an integer number (71295285672).

Almost surely, 2^213885857013 is an apocalyptic number.

It is an amenable number.

213885857013 is a deficient number, since it is larger than the sum of its proper divisors (71295285675).

213885857013 is an equidigital number, since it uses as much as digits as its factorization.

213885857013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71295285674.

The product of its (nonzero) digits is 1612800, while the sum is 51.

The spelling of 213885857013 in words is "two hundred thirteen billion, eight hundred eighty-five million, eight hundred fifty-seven thousand, thirteen".