551632266321 has 4 divisors (see below), whose sum is σ = 735509688432. Its totient is φ = 367754844212.

The previous prime is 551632266301. The next prime is 551632266371. The reversal of 551632266321 is 123662236155.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 551632266321 - 2¹⁸ = 551632004177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (551632266301) 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 3 ways as a sum of consecutive naturals, for example, 91938711051 + ... + 91938711056.

It is an arithmetic number, because the mean of its divisors is an integer number (183877422108).

Almost surely, 2^551632266321 is an apocalyptic number.

It is an amenable number.

551632266321 is a deficient number, since it is larger than the sum of its proper divisors (183877422111).

551632266321 is a wasteful number, since it uses less digits than its factorization.

551632266321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183877422110.

The product of its digits is 388800, while the sum is 42.

The spelling of 551632266321 in words is "five hundred fifty-one billion, six hundred thirty-two million, two hundred sixty-six thousand, three hundred twenty-one".