3991580243105 has 64 divisors (see below), whose sum is σ = 6030860064768. Its totient is φ = 2468604764160.

The previous prime is 3991580243099. The next prime is 3991580243111. The reversal of 3991580243105 is 5013420851993.

3991580243105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3991580243099) and next prime (3991580243111).

It is not a de Polignac number, because 3991580243105 - 2⁸ = 3991580242849 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12523925 + ... + 12838685.

It is an arithmetic number, because the mean of its divisors is an integer number (94232188512).

Almost surely, 2^{3991580243105} is an apocalyptic number.

3991580243105 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3991580243105 is a deficient number, since it is larger than the sum of its proper divisors (2039279821663).

3991580243105 is a wasteful number, since it uses less digits than its factorization.

3991580243105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315426.

The product of its (nonzero) digits is 1166400, while the sum is 50.

The spelling of 3991580243105 in words is "three trillion, nine hundred ninety-one billion, five hundred eighty million, two hundred forty-three thousand, one hundred five".