67989865311 has 12 divisors (see below), whose sum is σ = 98264274888. Its totient is φ = 45300411504.

The previous prime is 67989865309. The next prime is 67989865351. The reversal of 67989865311 is 11356898976.

67989865311 is a `hidden beast` number, since 6 + 7 + 9 + 8 + 98 + 6 + 531 + 1 = 666.

It is not a de Polignac number, because 67989865311 - 2¹ = 67989865309 is a prime.

It is a super-2 number, since 2×67989865311² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67989865351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2163985 + ... + 2195178.

It is an arithmetic number, because the mean of its divisors is an integer number (8188689574).

Almost surely, 2^67989865311 is an apocalyptic number.

67989865311 is a deficient number, since it is larger than the sum of its proper divisors (30274409577).

67989865311 is a wasteful number, since it uses less digits than its factorization.

67989865311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4360902 (or 4360899 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 63.

The spelling of 67989865311 in words is "sixty-seven billion, nine hundred eighty-nine million, eight hundred sixty-five thousand, three hundred eleven".