213502544442 has 96 divisors (see below), whose sum is σ = 526360161600. Its totient is φ = 64323486720.

The previous prime is 213502544413. The next prime is 213502544471. The reversal of 213502544442 is 244445205312.

213502544442 is a `hidden beast` number, since 21 + 3 + 50 + 2 + 544 + 4 + 42 = 666.

It is an interprime number because it is at equal distance from previous prime (213502544413) and next prime (213502544471).

It is a junction number, because it is equal to n+sod(n) for n = 213502544397 and 213502544406.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 809434 + ... + 1040282.

It is an arithmetic number, because the mean of its divisors is an integer number (5482918350).

Almost surely, 2^213502544442 is an apocalyptic number.

213502544442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 213502544442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263180080800).

213502544442 is an abundant number, since it is smaller than the sum of its proper divisors (312857617158).

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

213502544442 is a wasteful number, since it uses less digits than its factorization.

213502544442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231050 (or 231038 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 36.

Adding to 213502544442 its reverse (244445205312), we get a palindrome (457947749754).

The spelling of 213502544442 in words is "two hundred thirteen billion, five hundred two million, five hundred forty-four thousand, four hundred forty-two".