5561511166 has 32 divisors (see below), whose sum is σ = 9122641920. Its totient is φ = 2533096800.

The previous prime is 5561511157. The next prime is 5561511173. The reversal of 5561511166 is 6611151655.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169911 + ... + 199981.

It is an arithmetic number, because the mean of its divisors is an integer number (285082560).

Almost surely, 2^5561511166 is an apocalyptic number.

5561511166 is a deficient number, since it is larger than the sum of its proper divisors (3561130754).

5561511166 is a wasteful number, since it uses less digits than its factorization.

5561511166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30280.

The product of its digits is 27000, while the sum is 37.

The square root of 5561511166 is about 74575.5399980449. The cubic root of 5561511166 is about 1771.7302673358.

The spelling of 5561511166 in words is "five billion, five hundred sixty-one million, five hundred eleven thousand, one hundred sixty-six".