40161992717 has 16 divisors (see below), whose sum is σ = 50121331200. Its totient is φ = 31264286640.

The previous prime is 40161992693. The next prime is 40161992753. The reversal of 40161992717 is 71729916104.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 40161992717 - 2²⁰ = 40160944141 is a prime.

It is a super-2 number, since 2×40161992717² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40161992917) 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 15 ways as a sum of consecutive naturals, for example, 177467 + ... + 334392.

It is an arithmetic number, because the mean of its divisors is an integer number (3132583200).

Almost surely, 2^40161992717 is an apocalyptic number.

It is an amenable number.

40161992717 is a deficient number, since it is larger than the sum of its proper divisors (9959338483).

40161992717 is a wasteful number, since it uses less digits than its factorization.

40161992717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512896.

The product of its (nonzero) digits is 190512, while the sum is 47.

The spelling of 40161992717 in words is "forty billion, one hundred sixty-one million, nine hundred ninety-two thousand, seven hundred seventeen".