555686686555 has 48 divisors (see below), whose sum is σ = 902098959552. Its totient is φ = 319755744000.

The previous prime is 555686686553. The next prime is 555686686609.

555686686555 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 555686686555 - 2¹ = 555686686553 is a prime.

It is a super-2 number, since 2×555686686555² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (555686686553) 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 47 ways as a sum of consecutive naturals, for example, 4991596 + ... + 5101705.

It is an arithmetic number, because the mean of its divisors is an integer number (18793728324).

Almost surely, 2^555686686555 is an apocalyptic number.

555686686555 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

555686686555 is a deficient number, since it is larger than the sum of its proper divisors (346412272997).

555686686555 is a wasteful number, since it uses less digits than its factorization.

555686686555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10093348 (or 10093337 counting only the distinct ones).

The product of its digits is 1296000000, while the sum is 70.

The spelling of 555686686555 in words is "five hundred fifty-five billion, six hundred eighty-six million, six hundred eighty-six thousand, five hundred fifty-five".