68811526668 has 24 divisors (see below), whose sum is σ = 160564495168. Its totient is φ = 22936566096.

The previous prime is 68811526631. The next prime is 68811526691. The reversal of 68811526668 is 86662511886.

It is a happy number.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 771855 + ... + 856377.

Almost surely, 2^68811526668 is an apocalyptic number.

It is an amenable number.

68811526668 is an abundant number, since it is smaller than the sum of its proper divisors (91752968500).

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

68811526668 is a wasteful number, since it uses less digits than its factorization.

68811526668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152373 (or 152371 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 57.

The spelling of 68811526668 in words is "sixty-eight billion, eight hundred eleven million, five hundred twenty-six thousand, six hundred sixty-eight".