55617289563 has 16 divisors (see below), whose sum is σ = 80950176000. Its totient is φ = 33685656480.

The previous prime is 55617289523. The next prime is 55617289601. The reversal of 55617289563 is 36598271655.

It is not a de Polignac number, because 55617289563 - 2¹² = 55617285467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55617289523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 492903 + ... + 595136.

It is an arithmetic number, because the mean of its divisors is an integer number (5059386000).

Almost surely, 2^55617289563 is an apocalyptic number.

55617289563 is a deficient number, since it is larger than the sum of its proper divisors (25332886437).

55617289563 is a wasteful number, since it uses less digits than its factorization.

55617289563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089602.

The product of its digits is 13608000, while the sum is 57.

The spelling of 55617289563 in words is "fifty-five billion, six hundred seventeen million, two hundred eighty-nine thousand, five hundred sixty-three".