2166265576 has 16 divisors (see below), whose sum is σ = 4062248640. Its totient is φ = 1082999280.

The previous prime is 2166265571. The next prime is 2166265609. The reversal of 2166265576 is 6755626612.

It is a super-2 number, since 2×2166265576² = 9385413091525223552, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2166265571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101521 + ... + 120991.

It is an arithmetic number, because the mean of its divisors is an integer number (253890540).

Almost surely, 2^2166265576 is an apocalyptic number.

It is an amenable number.

2166265576 is a deficient number, since it is larger than the sum of its proper divisors (1895983064).

2166265576 is a wasteful number, since it uses less digits than its factorization.

2166265576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33384 (or 33380 counting only the distinct ones).

The product of its digits is 907200, while the sum is 46.

The square root of 2166265576 is about 46543.1582082695. The cubic root of 2166265576 is about 1293.9094939434.

The spelling of 2166265576 in words is "two billion, one hundred sixty-six million, two hundred sixty-five thousand, five hundred seventy-six".