40531073481 has 18 divisors (see below), whose sum is σ = 62191282062. Its totient is φ = 25431260160.

The previous prime is 40531073461. The next prime is 40531073483. The reversal of 40531073481 is 18437013504.

It is a happy number.

40531073481 is a `hidden beast` number, since 40 + 531 + 0 + 7 + 3 + 4 + 81 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 13028167881 + 27502905600 = 114141^2 + 165840^2 .

It is not a de Polignac number, because 40531073481 - 2¹⁰ = 40531072457 is a prime.

It is a super-2 number, since 2×40531073481² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40531073483) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7788840 + ... + 7794041.

Almost surely, 2^40531073481 is an apocalyptic number.

It is an amenable number.

40531073481 is a deficient number, since it is larger than the sum of its proper divisors (21660208581).

40531073481 is a wasteful number, since it uses less digits than its factorization.

40531073481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15582921 (or 15582901 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

Adding to 40531073481 its reverse (18437013504), we get a palindrome (58968086985).

The spelling of 40531073481 in words is "forty billion, five hundred thirty-one million, seventy-three thousand, four hundred eighty-one".