40531056489 has 144 divisors (see below), whose sum is σ = 75577162752. Its totient is φ = 20481120000.

The previous prime is 40531056469. The next prime is 40531056499. The reversal of 40531056489 is 98465013504.

40531056489 is a `hidden beast` number, since 4 + 0 + 5 + 3 + 1 + 0 + 564 + 89 = 666.

It is not a de Polignac number, because 40531056489 - 2¹⁶ = 40530990953 is a prime.

It is a super-2 number, since 2×40531056489² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40531056439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 46964872 + ... + 46965734.

It is an arithmetic number, because the mean of its divisors is an integer number (524841408).

Almost surely, 2^40531056489 is an apocalyptic number.

It is an amenable number.

40531056489 is a deficient number, since it is larger than the sum of its proper divisors (35046106263).

40531056489 is a wasteful number, since it uses less digits than its factorization.

40531056489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060 (or 1046 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 40531056489 in words is "forty billion, five hundred thirty-one million, fifty-six thousand, four hundred eighty-nine".