68086646268642 has 12 divisors (see below), whose sum is σ = 147521066915430. Its totient is φ = 22695548756208.

The previous prime is 68086646268637. The next prime is 68086646268647. The reversal of 68086646268642 is 24686264668086.

68086646268642 is a `hidden beast` number, since 6 + 8 + 0 + 8 + 66 + 462 + 68 + 6 + 42 = 666.

It is an interprime number because it is at equal distance from previous prime (68086646268637) and next prime (68086646268647).

It can be written as a sum of positive squares in only one way, i.e., 65102289822801 + 2984356445841 = 8068599^2 + 1727529^2 .

It is a super-2 number, since 2×68086646268642² (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 5 ways as a sum of consecutive naturals, for example, 1891295729667 + ... + 1891295729702.

Almost surely, 2^{68086646268642} is an apocalyptic number.

68086646268642 is an abundant number, since it is smaller than the sum of its proper divisors (79434420646788).

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

68086646268642 is a wasteful number, since it uses less digits than its factorization.

68086646268642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3782591459377 (or 3782591459374 counting only the distinct ones).

The product of its (nonzero) digits is 1528823808, while the sum is 72.

The spelling of 68086646268642 in words is "sixty-eight trillion, eighty-six billion, six hundred forty-six million, two hundred sixty-eight thousand, six hundred forty-two".