68887666678886 has 16 divisors (see below), whose sum is σ = 112846613225040. Its totient is φ = 31278870074880.

The previous prime is 68887666678861. The next prime is 68887666678907.

68887666678886 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×68887666678886² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68887666678792 and 68887666678801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1685263511 + ... + 1685304386.

It is an arithmetic number, because the mean of its divisors is an integer number (7052913326565).

Almost surely, 2^{68887666678886} is an apocalyptic number.

68887666678886 is a deficient number, since it is larger than the sum of its proper divisors (43958946546154).

68887666678886 is a wasteful number, since it uses less digits than its factorization.

68887666678886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3370568839.

The product of its digits is 599298932736, while the sum is 98.

The spelling of 68887666678886 in words is "sixty-eight trillion, eight hundred eighty-seven billion, six hundred sixty-six million, six hundred seventy-eight thousand, eight hundred eighty-six".