68086646268644 has 24 divisors (see below), whose sum is σ = 126177105729528. Its totient is φ = 32036570196480.

The previous prime is 68086646268637. The next prime is 68086646268647. The reversal of 68086646268644 is 44686264668086.

It can be written as a sum of positive squares in 4 ways, for example, as 33748663609600 + 34337982659044 = 5809360^2 + 5859862^2 .

It is a super-2 number, since 2×68086646268644² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68086646268647) 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, 65173559 + ... + 66210014.

It is an arithmetic number, because the mean of its divisors is an integer number (5257379405397).

Almost surely, 2^{68086646268644} is an apocalyptic number.

It is an amenable number.

68086646268644 is a deficient number, since it is larger than the sum of its proper divisors (58090459460884).

68086646268644 is a wasteful number, since it uses less digits than its factorization.

68086646268644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131391215 (or 131391213 counting only the distinct ones).

The product of its (nonzero) digits is 3057647616, while the sum is 74.

The spelling of 68086646268644 in words is "sixty-eight trillion, eighty-six billion, six hundred forty-six million, two hundred sixty-eight thousand, six hundred forty-four".