213313516444 has 12 divisors (see below), whose sum is σ = 426627032944. Its totient is φ = 91420078464.

The previous prime is 213313516373. The next prime is 213313516447. The reversal of 213313516444 is 444615313312.

213313516444 is an admirable number.

It is a super-4 number, since 4×213313516444⁴ (a number of 46 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213313516447) 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, 3809169909 + ... + 3809169964.

Almost surely, 2^213313516444 is an apocalyptic number.

It is an amenable number.

213313516444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213313516444 is a wasteful number, since it uses less digits than its factorization.

213313516444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7618339884 (or 7618339882 counting only the distinct ones).

The product of its digits is 103680, while the sum is 37.

Adding to 213313516444 its reverse (444615313312), we get a palindrome (657928829756).

The spelling of 213313516444 in words is "two hundred thirteen billion, three hundred thirteen million, five hundred sixteen thousand, four hundred forty-four".