68140747468 has 24 divisors (see below), whose sum is σ = 123162246144. Its totient is φ = 32952771600.

The previous prime is 68140747417. The next prime is 68140747529. The reversal of 68140747468 is 86474704186.

It is a super-2 number, since 2×68140747468² (a number of 22 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 67833 + ... + 375343.

It is an arithmetic number, because the mean of its divisors is an integer number (5131760256).

Almost surely, 2^68140747468 is an apocalyptic number.

It is an amenable number.

68140747468 is a deficient number, since it is larger than the sum of its proper divisors (55021498676).

68140747468 is a wasteful number, since it uses less digits than its factorization.

68140747468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309333 (or 309331 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 55.

The spelling of 68140747468 in words is "sixty-eight billion, one hundred forty million, seven hundred forty-seven thousand, four hundred sixty-eight".