43624042643 has 2 divisors, whose sum is σ = 43624042644. Its totient is φ = 43624042642.

The previous prime is 43624042633. The next prime is 43624042663. The reversal of 43624042643 is 34624042634.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43624042643 - 2⁸ = 43624042387 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43624042597 and 43624042606.

It is not a weakly prime, because it can be changed into another prime (43624042613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21812021321 + 21812021322.

It is an arithmetic number, because the mean of its divisors is an integer number (21812021322).

Almost surely, 2^43624042643 is an apocalyptic number.

43624042643 is a deficient number, since it is larger than the sum of its proper divisors (1).

43624042643 is an equidigital number, since it uses as much as digits as its factorization.

43624042643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 38.

Subtracting from 43624042643 its reverse (34624042634), we obtain a palindrome (9000000009).

The spelling of 43624042643 in words is "forty-three billion, six hundred twenty-four million, forty-two thousand, six hundred forty-three".