65244881212 has 18 divisors (see below), whose sum is σ = 132819937152. Its totient is φ = 27962091864.

The previous prime is 65244881189. The next prime is 65244881231. The reversal of 65244881212 is 21218844256.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 166440828 + ... + 166441219.

Almost surely, 2^65244881212 is an apocalyptic number.

It is an amenable number.

65244881212 is an abundant number, since it is smaller than the sum of its proper divisors (67575055940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65244881212 is a wasteful number, since it uses less digits than its factorization.

65244881212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332882065 (or 332882056 counting only the distinct ones).

The product of its digits is 245760, while the sum is 43.

The spelling of 65244881212 in words is "sixty-five billion, two hundred forty-four million, eight hundred eighty-one thousand, two hundred twelve".