55166727894 has 16 divisors (see below), whose sum is σ = 110368179120. Its totient is φ = 18383122080.

The previous prime is 55166727893. The next prime is 55166727899. The reversal of 55166727894 is 49872766155.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55166727893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1426129 + ... + 1464300.

It is an arithmetic number, because the mean of its divisors is an integer number (6898011195).

Almost surely, 2^55166727894 is an apocalyptic number.

55166727894 is an abundant number, since it is smaller than the sum of its proper divisors (55201451226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55166727894 is a wasteful number, since it uses less digits than its factorization.

55166727894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2893615.

The product of its digits is 25401600, while the sum is 60.

The spelling of 55166727894 in words is "fifty-five billion, one hundred sixty-six million, seven hundred twenty-seven thousand, eight hundred ninety-four".