5500555550551 has 4 divisors (see below), whose sum is σ = 5506929312192. Its totient is φ = 5494181788912.

The previous prime is 5500555550549. The next prime is 5500555550569. The reversal of 5500555550551 is 1550555550055.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 5500555550551 - 2¹ = 5500555550549 is a prime.

It is a super-2 number, since 2×5500555550551² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5500555550951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3186879526 + ... + 3186881251.

It is an arithmetic number, because the mean of its divisors is an integer number (1376732328048).

Almost surely, 2^{5500555550551} is an apocalyptic number.

5500555550551 is a deficient number, since it is larger than the sum of its proper divisors (6373761641).

5500555550551 is an equidigital number, since it uses as much as digits as its factorization.

5500555550551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6373761640.

The product of its (nonzero) digits is 1953125, while the sum is 46.

The spelling of 5500555550551 in words is "five trillion, five hundred billion, five hundred fifty-five million, five hundred fifty thousand, five hundred fifty-one".