55891927839 has 12 divisors (see below), whose sum is σ = 81913239128. Its totient is φ = 33873895440.

The previous prime is 55891927813. The next prime is 55891927859. The reversal of 55891927839 is 93872919855.

55891927839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55891927839 - 2⁵ = 55891927807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55891927839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55891927859) 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, 76985764 + ... + 76986489.

Almost surely, 2^55891927839 is an apocalyptic number.

55891927839 is a deficient number, since it is larger than the sum of its proper divisors (26021311289).

55891927839 is a wasteful number, since it uses less digits than its factorization.

55891927839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153972278 (or 153972267 counting only the distinct ones).

The product of its digits is 48988800, while the sum is 66.

The spelling of 55891927839 in words is "fifty-five billion, eight hundred ninety-one million, nine hundred twenty-seven thousand, eight hundred thirty-nine".