55617833889 has 12 divisors (see below), whose sum is σ = 83107108500. Its totient is φ = 35799984864.

The previous prime is 55617833881. The next prime is 55617833891. The reversal of 55617833889 is 98833871655.

55617833889 is a `hidden beast` number, since 5 + 5 + 617 + 8 + 3 + 3 + 8 + 8 + 9 = 666.

55617833889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 32811699600 + 22806134289 = 181140^2 + 151017^2 .

It is not a de Polignac number, because 55617833889 - 2³ = 55617833881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55617833881) 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, 106547314 + ... + 106547835.

It is an arithmetic number, because the mean of its divisors is an integer number (6925592375).

Almost surely, 2^55617833889 is an apocalyptic number.

It is an amenable number.

55617833889 is a deficient number, since it is larger than the sum of its proper divisors (27489274611).

55617833889 is a wasteful number, since it uses less digits than its factorization.

55617833889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213095184 (or 213095181 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 63.

The spelling of 55617833889 in words is "fifty-five billion, six hundred seventeen million, eight hundred thirty-three thousand, eight hundred eighty-nine".