2166051004 has 12 divisors (see below), whose sum is σ = 4082173144. Its totient is φ = 999715824.

The previous prime is 2166050989. The next prime is 2166051007. The reversal of 2166051004 is 4001506612.

It is a self number, because there is not a number n which added to its sum of digits gives 2166051004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166051007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20827362 + ... + 20827465.

Almost surely, 2^2166051004 is an apocalyptic number.

It is an amenable number.

2166051004 is a deficient number, since it is larger than the sum of its proper divisors (1916122140).

2166051004 is a wasteful number, since it uses less digits than its factorization.

2166051004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41654844 (or 41654842 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2166051004 is about 46540.8530648075. The cubic root of 2166051004 is about 1293.8667712785.

Adding to 2166051004 its reverse (4001506612), we get a palindrome (6167557616).

The spelling of 2166051004 in words is "two billion, one hundred sixty-six million, fifty-one thousand, four".