551055551099 has 4 divisors (see below), whose sum is σ = 560089248720. Its totient is φ = 542021853480.

The previous prime is 551055551093. The next prime is 551055551197. The reversal of 551055551099 is 990155550155.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551055551099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551055551093) 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 in 3 ways as a sum of consecutive naturals, for example, 4516848719 + ... + 4516848840.

It is an arithmetic number, because the mean of its divisors is an integer number (140022312180).

Almost surely, 2^551055551099 is an apocalyptic number.

551055551099 is a deficient number, since it is larger than the sum of its proper divisors (9033697621).

551055551099 is an equidigital number, since it uses as much as digits as its factorization.

551055551099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9033697620.

The product of its (nonzero) digits is 1265625, while the sum is 50.

The spelling of 551055551099 in words is "five hundred fifty-one billion, fifty-five million, five hundred fifty-one thousand, ninety-nine".