40131743865 has 16 divisors (see below), whose sum is σ = 64314874368. Its totient is φ = 21368902016.

The previous prime is 40131743857. The next prime is 40131743903. The reversal of 40131743865 is 56834713104.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 40131743865 - 2³ = 40131743857 is a prime.

It is a super-2 number, since 2×40131743865² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2158857 + ... + 2177366.

It is an arithmetic number, because the mean of its divisors is an integer number (4019679648).

Almost surely, 2^40131743865 is an apocalyptic number.

It is an amenable number.

40131743865 is a deficient number, since it is larger than the sum of its proper divisors (24183130503).

40131743865 is a wasteful number, since it uses less digits than its factorization.

40131743865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4336848.

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 40131743865 in words is "forty billion, one hundred thirty-one million, seven hundred forty-three thousand, eight hundred sixty-five".