550943931987 has 54 divisors (see below), whose sum is σ = 817065067884. Its totient is φ = 357660372960.

The previous prime is 550943931973. The next prime is 550943931997. The reversal of 550943931987 is 789139349055.

550943931987 is a `hidden beast` number, since 5 + 5 + 0 + 9 + 439 + 3 + 198 + 7 = 666.

It is not a de Polignac number, because 550943931987 - 2²² = 550939737683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (550943931907) 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 53 ways as a sum of consecutive naturals, for example, 3043889037 + ... + 3043889217.

Almost surely, 2^550943931987 is an apocalyptic number.

550943931987 is a deficient number, since it is larger than the sum of its proper divisors (266121135897).

550943931987 is an equidigital number, since it uses as much as digits as its factorization.

550943931987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769 (or 418 counting only the distinct ones).

The product of its (nonzero) digits is 36741600, while the sum is 63.

The spelling of 550943931987 in words is "five hundred fifty billion, nine hundred forty-three million, nine hundred thirty-one thousand, nine hundred eighty-seven".