551530360399 has 2 divisors, whose sum is σ = 551530360400. Its totient is φ = 551530360398.

The previous prime is 551530360391. The next prime is 551530360411. The reversal of 551530360399 is 993063035155.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 551530360399 - 2³ = 551530360391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551530360391) by changing a digit.

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 as a sum of consecutive naturals, namely, 275765180199 + 275765180200.

It is an arithmetic number, because the mean of its divisors is an integer number (275765180200).

Almost surely, 2^551530360399 is an apocalyptic number.

551530360399 is a deficient number, since it is larger than the sum of its proper divisors (1).

551530360399 is an equidigital number, since it uses as much as digits as its factorization.

551530360399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1640250, while the sum is 49.

The spelling of 551530360399 in words is "five hundred fifty-one billion, five hundred thirty million, three hundred sixty thousand, three hundred ninety-nine".