67564459212 has 24 divisors (see below), whose sum is σ = 157702708800. Its totient is φ = 22514014416.

The previous prime is 67564459139. The next prime is 67564459223. The reversal of 67564459212 is 21295446576.

It is a happy number.

It is a super-2 number, since 2×67564459212² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 896262 + ... + 968717.

It is an arithmetic number, because the mean of its divisors is an integer number (6570946200).

Almost surely, 2^67564459212 is an apocalyptic number.

It is an amenable number.

67564459212 is an abundant number, since it is smaller than the sum of its proper divisors (90138249588).

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

67564459212 is a wasteful number, since it uses less digits than its factorization.

67564459212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1868005 (or 1868003 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 51.

The spelling of 67564459212 in words is "sixty-seven billion, five hundred sixty-four million, four hundred fifty-nine thousand, two hundred twelve".