68835657911 has 4 divisors (see below), whose sum is σ = 68837821152. Its totient is φ = 68833494672.

The previous prime is 68835657871. The next prime is 68835657931. The reversal of 68835657911 is 11975653886.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68835657911 - 2¹⁸ = 68835395767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68835657931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1033166 + ... + 1097771.

It is an arithmetic number, because the mean of its divisors is an integer number (17209455288).

Almost surely, 2^68835657911 is an apocalyptic number.

68835657911 is a deficient number, since it is larger than the sum of its proper divisors (2163241).

68835657911 is a wasteful number, since it uses less digits than its factorization.

68835657911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2163240.

The product of its digits is 10886400, while the sum is 59.

The spelling of 68835657911 in words is "sixty-eight billion, eight hundred thirty-five million, six hundred fifty-seven thousand, nine hundred eleven".