39985961041 has 16 divisors (see below), whose sum is σ = 44509954048. Its totient is φ = 35672011200.

The previous prime is 39985961033. The next prime is 39985961051. The reversal of 39985961041 is 14016958993.

It is a cyclic number.

It is not a de Polignac number, because 39985961041 - 2³ = 39985961033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39985961051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239536 + ... + 370606.

It is an arithmetic number, because the mean of its divisors is an integer number (2781872128).

Almost surely, 2^39985961041 is an apocalyptic number.

39985961041 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

39985961041 is a deficient number, since it is larger than the sum of its proper divisors (4523993007).

39985961041 is a wasteful number, since it uses less digits than its factorization.

39985961041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131872.

The product of its (nonzero) digits is 2099520, while the sum is 55.

The spelling of 39985961041 in words is "thirty-nine billion, nine hundred eighty-five million, nine hundred sixty-one thousand, forty-one".