55543337945 has 4 divisors (see below), whose sum is σ = 66652005540. Its totient is φ = 44434670352.

The previous prime is 55543337923. The next prime is 55543337947. The reversal of 55543337945 is 54973334555.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42956293081 + 12587044864 = 207259^2 + 112192^2 .

It is a cyclic number.

It is not a de Polignac number, because 55543337945 - 2¹⁶ = 55543272409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55543337947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5554333790 + ... + 5554333799.

It is an arithmetic number, because the mean of its divisors is an integer number (16663001385).

Almost surely, 2^55543337945 is an apocalyptic number.

It is an amenable number.

55543337945 is a deficient number, since it is larger than the sum of its proper divisors (11108667595).

55543337945 is a wasteful number, since it uses less digits than its factorization.

55543337945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11108667594.

The product of its digits is 17010000, while the sum is 53.

The spelling of 55543337945 in words is "fifty-five billion, five hundred forty-three million, three hundred thirty-seven thousand, nine hundred forty-five".