2102566161 has 8 divisors (see below), whose sum is σ = 2809426464. Its totient is φ = 1398708320.

The previous prime is 2102566159. The next prime is 2102566211. The reversal of 2102566161 is 1616652012.

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

It is a cyclic number.

It is not a de Polignac number, because 2102566161 - 2¹ = 2102566159 is a prime.

It is a super-2 number, since 2×2102566161² = 8841568922764555842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2102566111) 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, 748980 + ... + 751781.

It is an arithmetic number, because the mean of its divisors is an integer number (351178308).

Almost surely, 2^2102566161 is an apocalyptic number.

It is an amenable number.

2102566161 is a deficient number, since it is larger than the sum of its proper divisors (706860303).

2102566161 is a wasteful number, since it uses less digits than its factorization.

2102566161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501231.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 2102566161 is about 45853.7475131532. The cubic root of 2102566161 is about 1281.1005673163.

The spelling of 2102566161 in words is "two billion, one hundred two million, five hundred sixty-six thousand, one hundred sixty-one".