40166441289 has 24 divisors (see below), whose sum is σ = 62637017352. Its totient is φ = 24656140800.

The previous prime is 40166441269. The next prime is 40166441309. The reversal of 40166441289 is 98214466104.

40166441289 is a `hidden beast` number, since 40 + 166 + 441 + 2 + 8 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (40166441269) and next prime (40166441309).

It can be written as a sum of positive squares in 4 ways, for example, as 4400066889 + 35766374400 = 66333^2 + 189120^2 .

It is not a de Polignac number, because 40166441289 - 2⁸ = 40166441033 is a prime.

It is a super-2 number, since 2×40166441289² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40166441209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 381142 + ... + 474975.

It is an arithmetic number, because the mean of its divisors is an integer number (2609875723).

Almost surely, 2^40166441289 is an apocalyptic number.

It is an amenable number.

40166441289 is a deficient number, since it is larger than the sum of its proper divisors (22470576063).

40166441289 is a wasteful number, since it uses less digits than its factorization.

40166441289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856537 (or 856534 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 40166441289 in words is "forty billion, one hundred sixty-six million, four hundred forty-one thousand, two hundred eighty-nine".