65984881161213 has 48 divisors (see below), whose sum is σ = 113090341553280. Its totient is φ = 36274023773568.

The previous prime is 65984881161191. The next prime is 65984881161229. The reversal of 65984881161213 is 31216118848956.

65984881161213 is a `hidden beast` number, since 6 + 5 + 9 + 8 + 4 + 8 + 8 + 1 + 1 + 612 + 1 + 3 = 666.

It is not a de Polignac number, because 65984881161213 - 2⁴⁰ = 64885369533437 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65984881161013) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64686195 + ... + 65698352.

It is an arithmetic number, because the mean of its divisors is an integer number (2356048782360).

Almost surely, 2^{65984881161213} is an apocalyptic number.

65984881161213 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

65984881161213 is a deficient number, since it is larger than the sum of its proper divisors (47105460392067).

65984881161213 is a wasteful number, since it uses less digits than its factorization.

65984881161213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130384866 (or 130384863 counting only the distinct ones).

The product of its digits is 19906560, while the sum is 63.

The spelling of 65984881161213 in words is "sixty-five trillion, nine hundred eighty-four billion, eight hundred eighty-one million, one hundred sixty-one thousand, two hundred thirteen".