68505660312 has 32 divisors (see below), whose sum is σ = 172864756800. Its totient is φ = 22621805984.

The previous prime is 68505660269. The next prime is 68505660317. The reversal of 68505660312 is 21306650586.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68505660317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13335762 + ... + 13340897.

It is an arithmetic number, because the mean of its divisors is an integer number (5402023650).

Almost surely, 2^68505660312 is an apocalyptic number.

It is an amenable number.

68505660312 is an abundant number, since it is smaller than the sum of its proper divisors (104359096488).

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

68505660312 is a wasteful number, since it uses less digits than its factorization.

68505660312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26676775 (or 26676771 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 68505660312 in words is "sixty-eight billion, five hundred five million, six hundred sixty thousand, three hundred twelve".