40131760044565 has 16 divisors (see below), whose sum is σ = 55046896404480. Its totient is φ = 27514394144640.

The previous prime is 40131760044529. The next prime is 40131760044583. The reversal of 40131760044565 is 56544006713104.

It is a happy number.

It is not a de Polignac number, because 40131760044565 - 2⁷ = 40131760044437 is a prime.

It is a super-2 number, since 2×40131760044565² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

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, 94097296 + ... + 94522825.

It is an arithmetic number, because the mean of its divisors is an integer number (3440431025280).

Almost surely, 2^{40131760044565} is an apocalyptic number.

It is an amenable number.

40131760044565 is a deficient number, since it is larger than the sum of its proper divisors (14915136359915).

40131760044565 is a wasteful number, since it uses less digits than its factorization.

40131760044565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188626212.

The product of its (nonzero) digits is 1209600, while the sum is 46.

Adding to 40131760044565 its reverse (56544006713104), we get a palindrome (96675766757669).

The spelling of 40131760044565 in words is "forty trillion, one hundred thirty-one billion, seven hundred sixty million, forty-four thousand, five hundred sixty-five".