55544831999 has 4 divisors (see below), whose sum is σ = 55547310936. Its totient is φ = 55542353064.

The previous prime is 55544831983. The next prime is 55544832017. The reversal of 55544831999 is 99913844555.

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

It is a cyclic number.

It is not a de Polignac number, because 55544831999 - 2⁴ = 55544831983 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 (55544891999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1205549 + ... + 1250774.

It is an arithmetic number, because the mean of its divisors is an integer number (13886827734).

Almost surely, 2^55544831999 is an apocalyptic number.

55544831999 is a deficient number, since it is larger than the sum of its proper divisors (2478937).

55544831999 is a wasteful number, since it uses less digits than its factorization.

55544831999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2478936.

The product of its digits is 34992000, while the sum is 62.

The spelling of 55544831999 in words is "fifty-five billion, five hundred forty-four million, eight hundred thirty-one thousand, nine hundred ninety-nine".