40166159109 has 4 divisors (see below), whose sum is σ = 53554878816. Its totient is φ = 26777439404.

The previous prime is 40166159093. The next prime is 40166159119. The reversal of 40166159109 is 90195166104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40166159109 - 2⁴ = 40166159093 is a prime.

It is a super-2 number, since 2×40166159109² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40166159119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6694359849 + ... + 6694359854.

It is an arithmetic number, because the mean of its divisors is an integer number (13388719704).

Almost surely, 2^40166159109 is an apocalyptic number.

It is an amenable number.

40166159109 is a deficient number, since it is larger than the sum of its proper divisors (13388719707).

40166159109 is a wasteful number, since it uses less digits than its factorization.

40166159109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13388719706.

The product of its (nonzero) digits is 58320, while the sum is 42.

The spelling of 40166159109 in words is "forty billion, one hundred sixty-six million, one hundred fifty-nine thousand, one hundred nine".