55166804143 has 4 divisors (see below), whose sum is σ = 60181968168. Its totient is φ = 50151640120.

The previous prime is 55166804101. The next prime is 55166804167. The reversal of 55166804143 is 34140866155.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55166804143 - 2⁹ = 55166803631 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55166804143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55166804243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2507581996 + ... + 2507582017.

It is an arithmetic number, because the mean of its divisors is an integer number (15045492042).

Almost surely, 2^55166804143 is an apocalyptic number.

55166804143 is a deficient number, since it is larger than the sum of its proper divisors (5015164025).

55166804143 is a wasteful number, since it uses less digits than its factorization.

55166804143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5015164024.

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 55166804143 in words is "fifty-five billion, one hundred sixty-six million, eight hundred four thousand, one hundred forty-three".