551505233544 has 128 divisors (see below), whose sum is σ = 1414982701440. Its totient is φ = 179084767232.

The previous prime is 551505233471. The next prime is 551505233551. The reversal of 551505233544 is 445332505155.

It is a junction number, because it is equal to n+sod(n) for n = 551505233496 and 551505233505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44337694 + ... + 44350130.

It is an arithmetic number, because the mean of its divisors is an integer number (11054552355).

Almost surely, 2^551505233544 is an apocalyptic number.

It is an amenable number.

551505233544 is an abundant number, since it is smaller than the sum of its proper divisors (863477467896).

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

551505233544 is a wasteful number, since it uses less digits than its factorization.

551505233544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12839 (or 12835 counting only the distinct ones).

The product of its (nonzero) digits is 900000, while the sum is 42.

Adding to 551505233544 its reverse (445332505155), we get a palindrome (996837738699).

The spelling of 551505233544 in words is "five hundred fifty-one billion, five hundred five million, two hundred thirty-three thousand, five hundred forty-four".