40872584644 has 12 divisors (see below), whose sum is σ = 72264415804. Its totient is φ = 20225608704.

The previous prime is 40872584633. The next prime is 40872584647. The reversal of 40872584644 is 44648527804.

It can be written as a sum of positive squares in 2 ways, for example, as 33796410244 + 7076174400 = 183838^2 + 84120^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40872584591 and 40872584600.

It is not an unprimeable number, because it can be changed into a prime (40872584647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52670469 + ... + 52671244.

Almost surely, 2^40872584644 is an apocalyptic number.

It is an amenable number.

40872584644 is a deficient number, since it is larger than the sum of its proper divisors (31391831160).

40872584644 is a wasteful number, since it uses less digits than its factorization.

40872584644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105341814 (or 105341812 counting only the distinct ones).

The product of its (nonzero) digits is 6881280, while the sum is 52.

The spelling of 40872584644 in words is "forty billion, eight hundred seventy-two million, five hundred eighty-four thousand, six hundred forty-four".