5555555556 has 12 divisors (see below), whose sum is σ = 12962962992. Its totient is φ = 1851851848.

The previous prime is 5555555519. The next prime is 5555555557. The reversal of 5555555556 is 6555555555.

It is a tau number, because it is divible by the number of its divisors (12).

It is a plaindrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 5555555499 and 5555555508.

It is not an unprimeable number, because it can be changed into a prime (5555555557) 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, 231481470 + ... + 231481493.

It is an arithmetic number, because the mean of its divisors is an integer number (1080246916).

Almost surely, 2^5555555556 is an apocalyptic number.

It is an amenable number.

5555555556 is an abundant number, since it is smaller than the sum of its proper divisors (7407407436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5555555556 is a wasteful number, since it uses less digits than its factorization.

5555555556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462962970 (or 462962968 counting only the distinct ones).

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

The square root of 5555555556 is about 74535.5992529744. The cubic root of 5555555556 is about 1771.0976153516.

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

It can be divided in two parts, 5555555 and 556, that added together give a triangular number (5556111 = T₃₃₃₃).

The spelling of 5555555556 in words is "five billion, five hundred fifty-five million, five hundred fifty-five thousand, five hundred fifty-six".