5556666554 has 16 divisors (see below), whose sum is σ = 8701497792. Its totient is φ = 2656281408.

The previous prime is 5556666523. The next prime is 5556666607. The reversal of 5556666554 is 4556666555.

It is a junction number, because it is equal to n+sod(n) for n = 5556666496 and 5556666505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73922 + ... + 128754.

It is an arithmetic number, because the mean of its divisors is an integer number (543843612).

Almost surely, 2^5556666554 is an apocalyptic number.

5556666554 is a deficient number, since it is larger than the sum of its proper divisors (3144831238).

5556666554 is a wasteful number, since it uses less digits than its factorization.

5556666554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57061.

The product of its digits is 16200000, while the sum is 53.

The square root of 5556666554 is about 74543.0516815618. The cubic root of 5556666554 is about 1771.2156686370.

Subtracting from 5556666554 its reverse (4556666555), we obtain a palindrome (999999999).

The spelling of 5556666554 in words is "five billion, five hundred fifty-six million, six hundred sixty-six thousand, five hundred fifty-four".