213528782513 has 8 divisors (see below), whose sum is σ = 217377272160. Its totient is φ = 209687938240.

The previous prime is 213528782503. The next prime is 213528782521. The reversal of 213528782513 is 315287825312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213528782513 - 2⁴ = 213528782497 is a prime.

It is a super-2 number, since 2×213528782513² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213528782503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1854968 + ... + 1966713.

It is an arithmetic number, because the mean of its divisors is an integer number (27172159020).

Almost surely, 2^213528782513 is an apocalyptic number.

It is an amenable number.

213528782513 is a deficient number, since it is larger than the sum of its proper divisors (3848489647).

213528782513 is an equidigital number, since it uses as much as digits as its factorization.

213528782513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3822687.

The product of its digits is 806400, while the sum is 47.

The spelling of 213528782513 in words is "two hundred thirteen billion, five hundred twenty-eight million, seven hundred eighty-two thousand, five hundred thirteen".