68081974663 has 24 divisors (see below), whose sum is σ = 73084223520. Its totient is φ = 63404113920.

The previous prime is 68081974603. The next prime is 68081974679. The reversal of 68081974663 is 36647918086.

It is a happy number.

It is not a de Polignac number, because 68081974663 - 2³³ = 59492040071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68081974598 and 68081974607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68081974603) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 25111878 + ... + 25114588.

It is an arithmetic number, because the mean of its divisors is an integer number (3045175980).

Almost surely, 2^68081974663 is an apocalyptic number.

68081974663 is a deficient number, since it is larger than the sum of its proper divisors (5002248857).

68081974663 is a wasteful number, since it uses less digits than its factorization.

68081974663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3627 (or 3610 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 58.

The spelling of 68081974663 in words is "sixty-eight billion, eighty-one million, nine hundred seventy-four thousand, six hundred sixty-three".