551155551155 has 48 divisors (see below), whose sum is σ = 735056671104. Its totient is φ = 396396000000.

The previous prime is 551155551109. The next prime is 551155551169.

551155551155 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 551155551155 - 2²⁰ = 551154502579 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is a Duffinian number.

It is a zygodrome in base 10.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 55661705 + ... + 55671605.

It is an arithmetic number, because the mean of its divisors is an integer number (15313680648).

Almost surely, 2^551155551155 is an apocalyptic number.

551155551155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

551155551155 is a deficient number, since it is larger than the sum of its proper divisors (183901119949).

551155551155 is a wasteful number, since it uses less digits than its factorization.

551155551155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10940 (or 10929 counting only the distinct ones).

The product of its digits is 390625, while the sum is 44.

The spelling of 551155551155 in words is "five hundred fifty-one billion, one hundred fifty-five million, five hundred fifty-one thousand, one hundred fifty-five".