43442624437 has 2 divisors, whose sum is σ = 43442624438. Its totient is φ = 43442624436.

The previous prime is 43442624429. The next prime is 43442624441. The reversal of 43442624437 is 73442624434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42353228401 + 1089396036 = 205799^2 + 33006^2 .

It is a cyclic number.

It is not a de Polignac number, because 43442624437 - 2³ = 43442624429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43442624393 and 43442624402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43442684437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21721312218 + 21721312219.

It is an arithmetic number, because the mean of its divisors is an integer number (21721312219).

Almost surely, 2^43442624437 is an apocalyptic number.

It is an amenable number.

43442624437 is a deficient number, since it is larger than the sum of its proper divisors (1).

43442624437 is an equidigital number, since it uses as much as digits as its factorization.

43442624437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1548288, while the sum is 43.

The spelling of 43442624437 in words is "forty-three billion, four hundred forty-two million, six hundred twenty-four thousand, four hundred thirty-seven".