55163223719 has 4 divisors (see below), whose sum is σ = 55163726520. Its totient is φ = 55162720920.

The previous prime is 55163223707. The next prime is 55163223751. The reversal of 55163223719 is 91732236155.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55163223719 is a prime.

It is a super-2 number, since 2×55163223719² (a number of 22 digits) contains 22 as substring.

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 55163223719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55163223769) 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, 8789 + ... + 332270.

It is an arithmetic number, because the mean of its divisors is an integer number (13790931630).

Almost surely, 2^55163223719 is an apocalyptic number.

55163223719 is a deficient number, since it is larger than the sum of its proper divisors (502801).

55163223719 is a wasteful number, since it uses less digits than its factorization.

55163223719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502800.

The product of its digits is 340200, while the sum is 44.

The spelling of 55163223719 in words is "fifty-five billion, one hundred sixty-three million, two hundred twenty-three thousand, seven hundred nineteen".