68118446817 has 12 divisors (see below), whose sum is σ = 98815604004. Its totient is φ = 45217393920.

The previous prime is 68118446807. The next prime is 68118446819. The reversal of 68118446817 is 71864481186.

68118446817 is a `hidden beast` number, since 6 + 8 + 118 + 446 + 81 + 7 = 666.

68118446817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 6814667601 + 61303779216 = 82551^2 + 247596^2 .

It is not a de Polignac number, because 68118446817 - 2¹¹ = 68118444769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68118446819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16239784 + ... + 16243977.

It is an arithmetic number, because the mean of its divisors is an integer number (8234633667).

Almost surely, 2^68118446817 is an apocalyptic number.

It is an amenable number.

68118446817 is a deficient number, since it is larger than the sum of its proper divisors (30697157187).

68118446817 is a wasteful number, since it uses less digits than its factorization.

68118446817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32484000 (or 32483997 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 54.

The spelling of 68118446817 in words is "sixty-eight billion, one hundred eighteen million, four hundred forty-six thousand, eight hundred seventeen".