5561166694 has 24 divisors (see below), whose sum is σ = 8820104040. Its totient is φ = 2628269280.

The previous prime is 5561166683. The next prime is 5561166727. The reversal of 5561166694 is 4966611655.

It is a happy number.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49002 + ... + 116290.

It is an arithmetic number, because the mean of its divisors is an integer number (367504335).

Almost surely, 2^5561166694 is an apocalyptic number.

5561166694 is a deficient number, since it is larger than the sum of its proper divisors (3258937346).

5561166694 is a wasteful number, since it uses less digits than its factorization.

5561166694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67396 (or 67365 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 49.

The square root of 5561166694 is about 74573.2304114553. The cubic root of 5561166694 is about 1771.6936871060.

The spelling of 5561166694 in words is "five billion, five hundred sixty-one million, one hundred sixty-six thousand, six hundred ninety-four".