6555555555 has 32 divisors (see below), whose sum is σ = 11147284800. Its totient is φ = 3278364672.

The previous prime is 6555555553. The next prime is 6555555557. The reversal of 6555555555 is 5555555556.

It is an interprime number because it is at equal distance from previous prime (6555555553) and next prime (6555555557).

It is not a de Polignac number, because 6555555555 - 2¹ = 6555555553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

6555555555 is a modest number, since divided by 555555 gives 6555 as remainder.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 6555555498 and 6555555507.

It is not an unprimeable number, because it can be changed into a prime (6555555553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20811 + ... + 116379.

It is an arithmetic number, because the mean of its divisors is an integer number (348352650).

Almost surely, 2^6555555555 is an apocalyptic number.

6555555555 is a deficient number, since it is larger than the sum of its proper divisors (4591729245).

6555555555 is a wasteful number, since it uses less digits than its factorization.

6555555555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95863.

The product of its digits is 11718750, while the sum is 51.

The square root of 6555555555 is about 80966.3853398433. The cubic root of 6555555555 is about 1871.5574692810.

Subtracting from 6555555555 its reverse (5555555556), we obtain a palindrome (999999999).

The spelling of 6555555555 in words is "six billion, five hundred fifty-five million, five hundred fifty-five thousand, five hundred fifty-five".