5005500505551 has 128 divisors (see below), whose sum is σ = 9609067776000. Its totient is φ = 2500816094208.

The previous prime is 5005500505529. The next prime is 5005500505559. The reversal of 5005500505551 is 1555050055005.

It is a happy number.

5005500505551 is a `hidden beast` number, since 5 + 0 + 0 + 5 + 50 + 0 + 50 + 5 + 551 = 666.

It is not a de Polignac number, because 5005500505551 - 2¹⁰ = 5005500504527 is a prime.

It is a super-2 number, since 2×5005500505551² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5005500505559) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 428217315 + ... + 428229003.

It is an arithmetic number, because the mean of its divisors is an integer number (75070842000).

Almost surely, 2^{5005500505551} is an apocalyptic number.

5005500505551 is a deficient number, since it is larger than the sum of its proper divisors (4603567270449).

5005500505551 is a wasteful number, since it uses less digits than its factorization.

5005500505551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20910 (or 20904 counting only the distinct ones).

The product of its (nonzero) digits is 78125, while the sum is 36.

The spelling of 5005500505551 in words is "five trillion, five billion, five hundred million, five hundred five thousand, five hundred fifty-one".