68074747474668 has 24 divisors (see below), whose sum is σ = 173281175390400. Its totient is φ = 20628711355920.

The previous prime is 68074747474663. The next prime is 68074747474691. The reversal of 68074747474668 is 86647474747086.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 68074747474593 and 68074747474602.

It is not an unprimeable number, because it can be changed into a prime (68074747474663) 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, 257858891818 + ... + 257858892081.

It is an arithmetic number, because the mean of its divisors is an integer number (7220048974600).

Almost surely, 2^{68074747474668} is an apocalyptic number.

It is an amenable number.

68074747474668 is an abundant number, since it is smaller than the sum of its proper divisors (105206427915732).

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

68074747474668 is a wasteful number, since it uses less digits than its factorization.

68074747474668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515717783917 (or 515717783915 counting only the distinct ones).

The product of its (nonzero) digits is 8497004544, while the sum is 78.

The spelling of 68074747474668 in words is "sixty-eight trillion, seventy-four billion, seven hundred forty-seven million, four hundred seventy-four thousand, six hundred sixty-eight".