55085489799 has 32 divisors (see below), whose sum is σ = 75508070400. Its totient is φ = 35708574720.

The previous prime is 55085489749. The next prime is 55085489801. The reversal of 55085489799 is 99798458055.

It is not a de Polignac number, because 55085489799 - 2⁹ = 55085489287 is a prime.

It is a super-2 number, since 2×55085489799² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55085489729) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29160247 + ... + 29162135.

It is an arithmetic number, because the mean of its divisors is an integer number (2359627200).

Almost surely, 2^55085489799 is an apocalyptic number.

55085489799 is a deficient number, since it is larger than the sum of its proper divisors (20422580601).

55085489799 is a wasteful number, since it uses less digits than its factorization.

55085489799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3775.

The product of its (nonzero) digits is 163296000, while the sum is 69.

The spelling of 55085489799 in words is "fifty-five billion, eighty-five million, four hundred eighty-nine thousand, seven hundred ninety-nine".