551321415243 has 6 divisors (see below), whose sum is σ = 796353155364. Its totient is φ = 367547610156.

The previous prime is 551321415133. The next prime is 551321415277. The reversal of 551321415243 is 342514123155.

551321415243 is a `hidden beast` number, since 5 + 51 + 321 + 41 + 5 + 243 = 666.

It is not a de Polignac number, because 551321415243 - 2¹⁶ = 551321349707 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 551321415198 and 551321415207.

It is not an unprimeable number, because it can be changed into a prime (551321415283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30628967505 + ... + 30628967522.

It is an arithmetic number, because the mean of its divisors is an integer number (132725525894).

Almost surely, 2^551321415243 is an apocalyptic number.

551321415243 is a deficient number, since it is larger than the sum of its proper divisors (245031740121).

551321415243 is a wasteful number, since it uses less digits than its factorization.

551321415243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61257935033 (or 61257935030 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

Adding to 551321415243 its reverse (342514123155), we get a palindrome (893835538398).

The spelling of 551321415243 in words is "five hundred fifty-one billion, three hundred twenty-one million, four hundred fifteen thousand, two hundred forty-three".