43845362513 has 2 divisors, whose sum is σ = 43845362514. Its totient is φ = 43845362512.

The previous prime is 43845362447. The next prime is 43845362543. The reversal of 43845362513 is 31526354834.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42812575744 + 1032786769 = 206912^2 + 32137^2 .

It is a cyclic number.

It is not a de Polignac number, because 43845362513 - 2¹⁰ = 43845361489 is a prime.

It is not a weakly prime, because it can be changed into another prime (43845362543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21922681256 + 21922681257.

It is an arithmetic number, because the mean of its divisors is an integer number (21922681257).

Almost surely, 2^43845362513 is an apocalyptic number.

It is an amenable number.

43845362513 is a deficient number, since it is larger than the sum of its proper divisors (1).

43845362513 is an equidigital number, since it uses as much as digits as its factorization.

43845362513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1036800, while the sum is 44.

The spelling of 43845362513 in words is "forty-three billion, eight hundred forty-five million, three hundred sixty-two thousand, five hundred thirteen".