68636263686 has 32 divisors (see below), whose sum is σ = 138901482720. Its totient is φ = 22607582976.

The previous prime is 68636263673. The next prime is 68636263691.

68636263686 is nontrivially palindromic in base 10.

68636263686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 834900 + ... + 913416.

It is an arithmetic number, because the mean of its divisors is an integer number (4340671335).

Almost surely, 2^68636263686 is an apocalyptic number.

68636263686 is an abundant number, since it is smaller than the sum of its proper divisors (70265219034).

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

68636263686 is a wasteful number, since it uses less digits than its factorization.

68636263686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80248.

The product of its digits is 53747712, while the sum is 60.

The spelling of 68636263686 in words is "sixty-eight billion, six hundred thirty-six million, two hundred sixty-three thousand, six hundred eighty-six".