43201321513 has 4 divisors (see below), whose sum is σ = 49372938880. Its totient is φ = 37029704148.

The previous prime is 43201321487. The next prime is 43201321543. The reversal of 43201321513 is 31512310234.

It is a happy number.

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 43201321513 - 2⁹ = 43201321001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43201321543) 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, 3085808673 + ... + 3085808686.

It is an arithmetic number, because the mean of its divisors is an integer number (12343234720).

Almost surely, 2^43201321513 is an apocalyptic number.

It is an amenable number.

43201321513 is a deficient number, since it is larger than the sum of its proper divisors (6171617367).

43201321513 is an equidigital number, since it uses as much as digits as its factorization.

43201321513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6171617366.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 43201321513 its reverse (31512310234), we get a palindrome (74713631747).

The spelling of 43201321513 in words is "forty-three billion, two hundred one million, three hundred twenty-one thousand, five hundred thirteen".