551144441155 has 128 divisors (see below), whose sum is σ = 859934693376. Its totient is φ = 329204736000.

The previous prime is 551144441077. The next prime is 551144441167.

551144441155 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 551144441155 - 2¹¹ = 551144439107 is a prime.

It is a zygodrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 188940757 + ... + 188943673.

It is an arithmetic number, because the mean of its divisors is an integer number (6718239792).

Almost surely, 2^551144441155 is an apocalyptic number.

551144441155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

551144441155 is a deficient number, since it is larger than the sum of its proper divisors (308790252221).

551144441155 is a wasteful number, since it uses less digits than its factorization.

551144441155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3197.

The product of its digits is 160000, while the sum is 40.

It can be divided in two parts, 551144 and 441155, that added together give a palindrome (992299).

The spelling of 551144441155 in words is "five hundred fifty-one billion, one hundred forty-four million, four hundred forty-one thousand, one hundred fifty-five".