43423427551 has 12 divisors (see below), whose sum is σ = 50518032048. Its totient is φ = 37216348512.

The previous prime is 43423427519. The next prime is 43423427561. The reversal of 43423427551 is 15572432434.

It is not a de Polignac number, because 43423427551 - 2⁵ = 43423427519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43423427561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 522195 + ... + 599611.

It is an arithmetic number, because the mean of its divisors is an integer number (4209836004).

Almost surely, 2^43423427551 is an apocalyptic number.

43423427551 is a deficient number, since it is larger than the sum of its proper divisors (7094604497).

43423427551 is a wasteful number, since it uses less digits than its factorization.

43423427551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88878 (or 88871 counting only the distinct ones).

The product of its digits is 403200, while the sum is 40.

Adding to 43423427551 its reverse (15572432434), we get a palindrome (58995859985).

The spelling of 43423427551 in words is "forty-three billion, four hundred twenty-three million, four hundred twenty-seven thousand, five hundred fifty-one".