3561166165 has 8 divisors (see below), whose sum is σ = 4292563968. Its totient is φ = 2836156560.

The previous prime is 3561166139. The next prime is 3561166183. The reversal of 3561166165 is 5616611653.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3561166165 - 2¹⁵ = 3561133397 is a prime.

It is a Duffinian number.

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, 1595821 + ... + 1598050.

It is an arithmetic number, because the mean of its divisors is an integer number (536570496).

Almost surely, 2^3561166165 is an apocalyptic number.

It is an amenable number.

3561166165 is a deficient number, since it is larger than the sum of its proper divisors (731397803).

3561166165 is a wasteful number, since it uses less digits than its factorization.

3561166165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3194099.

The product of its digits is 97200, while the sum is 40.

The square root of 3561166165 is about 59675.5072454353. The cubic root of 3561166165 is about 1527.0880528971.

The spelling of 3561166165 in words is "three billion, five hundred sixty-one million, one hundred sixty-six thousand, one hundred sixty-five".