40837985869 has 12 divisors (see below), whose sum is σ = 42772665376. Its totient is φ = 38987467992.

The previous prime is 40837985813. The next prime is 40837985893. The reversal of 40837985869 is 96858973804.

It is not a de Polignac number, because 40837985869 - 2¹¹ = 40837983821 is a prime.

It is a super-2 number, since 2×40837985869² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40837965869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 202864 + ... + 350470.

Almost surely, 2^40837985869 is an apocalyptic number.

It is an amenable number.

40837985869 is a deficient number, since it is larger than the sum of its proper divisors (1934679507).

40837985869 is a wasteful number, since it uses less digits than its factorization.

40837985869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148176 (or 148153 counting only the distinct ones).

The product of its (nonzero) digits is 104509440, while the sum is 67.

The spelling of 40837985869 in words is "forty billion, eight hundred thirty-seven million, nine hundred eighty-five thousand, eight hundred sixty-nine".