55043544042431 has 6 divisors (see below), whose sum is σ = 64030245110640. Its totient is φ = 47180180607756.

The previous prime is 55043544042397. The next prime is 55043544042457. The reversal of 55043544042431 is 13424044534055.

It is not a de Polignac number, because 55043544042431 - 2¹⁰ = 55043544041407 is a prime.

It is a super-2 number, since 2×55043544042431² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55043544002431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 561668816711 + ... + 561668816808.

It is an arithmetic number, because the mean of its divisors is an integer number (10671707518440).

Almost surely, 2^{55043544042431} is an apocalyptic number.

55043544042431 is a deficient number, since it is larger than the sum of its proper divisors (8986701068209).

55043544042431 is a wasteful number, since it uses less digits than its factorization.

55043544042431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123337633533 (or 1123337633526 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 44.

Adding to 55043544042431 its reverse (13424044534055), we get a palindrome (68467588576486).

The spelling of 55043544042431 in words is "fifty-five trillion, forty-three billion, five hundred forty-four million, forty-two thousand, four hundred thirty-one".