5515566166 has 16 divisors (see below), whose sum is σ = 9114836688. Its totient is φ = 2482252000.

The previous prime is 5515566113. The next prime is 5515566191. The reversal of 5515566166 is 6616655155.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1238905 + ... + 1243348.

It is an arithmetic number, because the mean of its divisors is an integer number (569677293).

Almost surely, 2^5515566166 is an apocalyptic number.

5515566166 is a deficient number, since it is larger than the sum of its proper divisors (3599270522).

5515566166 is a wasteful number, since it uses less digits than its factorization.

5515566166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2482367.

The product of its digits is 810000, while the sum is 46.

The square root of 5515566166 is about 74266.8577899994. The cubic root of 5515566166 is about 1766.8378714744.

The spelling of 5515566166 in words is "five billion, five hundred fifteen million, five hundred sixty-six thousand, one hundred sixty-six".