40331471665 has 16 divisors (see below), whose sum is σ = 52588408320. Its totient is φ = 29580975360.

The previous prime is 40331471659. The next prime is 40331471699. The reversal of 40331471665 is 56617413304.

It is not a de Polignac number, because 40331471665 - 2⁵ = 40331471633 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6844504 + ... + 6850393.

It is an arithmetic number, because the mean of its divisors is an integer number (3286775520).

Almost surely, 2^40331471665 is an apocalyptic number.

It is an amenable number.

40331471665 is a deficient number, since it is larger than the sum of its proper divisors (12256936655).

40331471665 is a wasteful number, since it uses less digits than its factorization.

40331471665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13694952.

The product of its (nonzero) digits is 181440, while the sum is 40.

Adding to 40331471665 its reverse (56617413304), we get a palindrome (96948884969).

The spelling of 40331471665 in words is "forty billion, three hundred thirty-one million, four hundred seventy-one thousand, six hundred sixty-five".