43144125643 has 2 divisors, whose sum is σ = 43144125644. Its totient is φ = 43144125642.

The previous prime is 43144125617. The next prime is 43144125691. The reversal of 43144125643 is 34652144134.

43144125643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43144125643 - 2¹⁷ = 43143994571 is a prime.

It is a super-2 number, since 2×43144125643² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43144125743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21572062821 + 21572062822.

It is an arithmetic number, because the mean of its divisors is an integer number (21572062822).

Almost surely, 2^43144125643 is an apocalyptic number.

43144125643 is a deficient number, since it is larger than the sum of its proper divisors (1).

43144125643 is an equidigital number, since it uses as much as digits as its factorization.

43144125643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 37.

Adding to 43144125643 its reverse (34652144134), we get a palindrome (77796269777).

The spelling of 43144125643 in words is "forty-three billion, one hundred forty-four million, one hundred twenty-five thousand, six hundred forty-three".