551324462500 has 144 divisors (see below), whose sum is σ = 1389103091712. Its totient is φ = 187533360000.

The previous prime is 551324462489. The next prime is 551324462501. The reversal of 551324462500 is 5264423155.

It is a self number, because there is not a number n which added to its sum of digits gives 551324462500.

It is not an unprimeable number, because it can be changed into a prime (551324462501) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11087694 + ... + 11137306.

It is an arithmetic number, because the mean of its divisors is an integer number (9646549248).

Almost surely, 2^551324462500 is an apocalyptic number.

551324462500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551324462500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (694551545856).

551324462500 is an abundant number, since it is smaller than the sum of its proper divisors (837778629212).

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

551324462500 is a wasteful number, since it uses less digits than its factorization.

551324462500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49776 (or 49754 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 551324462500 its reverse (5264423155), we get a palindrome (556588885655).

The spelling of 551324462500 in words is "five hundred fifty-one billion, three hundred twenty-four million, four hundred sixty-two thousand, five hundred".