3840939415985 has 32 divisors (see below), whose sum is σ = 5728172774400. Its totient is φ = 2411862193152.

The previous prime is 3840939415981. The next prime is 3840939415997. The reversal of 3840939415985 is 5895149390483.

It is not a de Polignac number, because 3840939415985 - 2² = 3840939415981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3840939415981) 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 31 ways as a sum of consecutive naturals, for example, 87212585 + ... + 87256614.

It is an arithmetic number, because the mean of its divisors is an integer number (179005399200).

Almost surely, 2^{3840939415985} is an apocalyptic number.

3840939415985 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3840939415985 is a deficient number, since it is larger than the sum of its proper divisors (1887233358415).

3840939415985 is a wasteful number, since it uses less digits than its factorization.

3840939415985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174469265.

The product of its (nonzero) digits is 167961600, while the sum is 68.

The spelling of 3840939415985 in words is "three trillion, eight hundred forty billion, nine hundred thirty-nine million, four hundred fifteen thousand, nine hundred eighty-five".