55588861689 has 4 divisors (see below), whose sum is σ = 74118482256. Its totient is φ = 37059241124.

The previous prime is 55588861651. The next prime is 55588861703. The reversal of 55588861689 is 98616888555.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55588861689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55588861609) 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, 9264810279 + ... + 9264810284.

It is an arithmetic number, because the mean of its divisors is an integer number (18529620564).

Almost surely, 2^55588861689 is an apocalyptic number.

It is an amenable number.

55588861689 is a deficient number, since it is larger than the sum of its proper divisors (18529620567).

55588861689 is a wasteful number, since it uses less digits than its factorization.

55588861689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18529620566.

The product of its digits is 165888000, while the sum is 69.

The spelling of 55588861689 in words is "fifty-five billion, five hundred eighty-eight million, eight hundred sixty-one thousand, six hundred eighty-nine".