5891212121985 has 64 divisors (see below), whose sum is σ = 10704303360000. Its totient is φ = 3073203840960.

The previous prime is 5891212121947. The next prime is 5891212121987.

It is a happy number.

5891212121985 is a `hidden beast` number, since 58 + 91 + 212 + 1 + 219 + 85 = 666.

5891212121985 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5891212121985 - 2¹⁴ = 5891212105601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5891212121987) 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 63 ways as a sum of consecutive naturals, for example, 273351 + ... + 3443420.

It is an arithmetic number, because the mean of its divisors is an integer number (167254740000).

Almost surely, 2^{5891212121985} is an apocalyptic number.

It is an amenable number.

5891212121985 is a deficient number, since it is larger than the sum of its proper divisors (4813091238015).

5891212121985 is a wasteful number, since it uses less digits than its factorization.

5891212121985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3717043 (or 3717037 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 54.

The spelling of 5891212121985 in words is "five trillion, eight hundred ninety-one billion, two hundred twelve million, one hundred twenty-one thousand, nine hundred eighty-five".