43123425551 has 2 divisors, whose sum is σ = 43123425552. Its totient is φ = 43123425550.

The previous prime is 43123425481. The next prime is 43123425557. The reversal of 43123425551 is 15552432134.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43123425551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43123425557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21561712775 + 21561712776.

It is an arithmetic number, because the mean of its divisors is an integer number (21561712776).

Almost surely, 2^43123425551 is an apocalyptic number.

43123425551 is a deficient number, since it is larger than the sum of its proper divisors (1).

43123425551 is an equidigital number, since it uses as much as digits as its factorization.

43123425551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72000, while the sum is 35.

Adding to 43123425551 its reverse (15552432134), we get a palindrome (58675857685).

The spelling of 43123425551 in words is "forty-three billion, one hundred twenty-three million, four hundred twenty-five thousand, five hundred fifty-one".