43325213513 has 2 divisors, whose sum is σ = 43325213514. Its totient is φ = 43325213512.

The previous prime is 43325213509. The next prime is 43325213531. The reversal of 43325213513 is 31531252334.

Together with next prime (43325213531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30959106304 + 12366107209 = 175952^2 + 111203^2 .

It is a cyclic number.

It is not a de Polignac number, because 43325213513 - 2² = 43325213509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43325213513.

It is not a weakly prime, because it can be changed into another prime (43325203513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21662606756 + 21662606757.

It is an arithmetic number, because the mean of its divisors is an integer number (21662606757).

Almost surely, 2^43325213513 is an apocalyptic number.

It is an amenable number.

43325213513 is a deficient number, since it is larger than the sum of its proper divisors (1).

43325213513 is an equidigital number, since it uses as much as digits as its factorization.

43325213513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 32.

Adding to 43325213513 its reverse (31531252334), we get a palindrome (74856465847).

The spelling of 43325213513 in words is "forty-three billion, three hundred twenty-five million, two hundred thirteen thousand, five hundred thirteen".