5661000166 has 16 divisors (see below), whose sum is σ = 8895191904. Its totient is φ = 2696894464.

The previous prime is 5661000161. The next prime is 5661000167. The reversal of 5661000166 is 6610001665.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5661000161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227605 + ... + 251248.

It is an arithmetic number, because the mean of its divisors is an integer number (555949494).

Almost surely, 2^5661000166 is an apocalyptic number.

5661000166 is a deficient number, since it is larger than the sum of its proper divisors (3234191738).

5661000166 is a wasteful number, since it uses less digits than its factorization.

5661000166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479135.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 5661000166 is about 75239.6183270489. The cubic root of 5661000166 is about 1782.2326239380.

The spelling of 5661000166 in words is "five billion, six hundred sixty-one million, one hundred sixty-six", and thus it is an aban number.