43525511203213 has 4 divisors (see below), whose sum is σ = 46873627449628. Its totient is φ = 40177394956800.

The previous prime is 43525511203201. The next prime is 43525511203217. The reversal of 43525511203213 is 31230211552534.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15641059994884 + 27884451208329 = 3954878^2 + 5280573^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43525511203213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43525511203217) 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, 1674058123188 + ... + 1674058123213.

It is an arithmetic number, because the mean of its divisors is an integer number (11718406862407).

Almost surely, 2^{43525511203213} is an apocalyptic number.

It is an amenable number.

43525511203213 is a deficient number, since it is larger than the sum of its proper divisors (3348116246415).

43525511203213 is a wasteful number, since it uses less digits than its factorization.

43525511203213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3348116246414.

The product of its (nonzero) digits is 108000, while the sum is 37.

Adding to 43525511203213 its reverse (31230211552534), we get a palindrome (74755722755747).

The spelling of 43525511203213 in words is "forty-three trillion, five hundred twenty-five billion, five hundred eleven million, two hundred three thousand, two hundred thirteen".