2165126126 has 16 divisors (see below), whose sum is σ = 3324164064. Its totient is φ = 1057359744.

The previous prime is 2165126123. The next prime is 2165126141. The reversal of 2165126126 is 6216215612.

It is a super-2 number, since 2×2165126126² = 9375542282975535752, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2165126092 and 2165126101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165126123) 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, 56951 + ... + 87026.

It is an arithmetic number, because the mean of its divisors is an integer number (207760254).

Almost surely, 2^2165126126 is an apocalyptic number.

2165126126 is a deficient number, since it is larger than the sum of its proper divisors (1159037938).

2165126126 is a wasteful number, since it uses less digits than its factorization.

2165126126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144155.

The product of its digits is 8640, while the sum is 32.

The square root of 2165126126 is about 46530.9158087395. The cubic root of 2165126126 is about 1293.6825898240.

The spelling of 2165126126 in words is "two billion, one hundred sixty-five million, one hundred twenty-six thousand, one hundred twenty-six".