68108440105 has 16 divisors (see below), whose sum is σ = 85749654528. Its totient is φ = 51864696000.

The previous prime is 68108440097. The next prime is 68108440171. The reversal of 68108440105 is 50104480186.

It is not a de Polignac number, because 68108440105 - 2³ = 68108440097 is a prime.

It is a super-2 number, since 2×68108440105² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3592261 + ... + 3611170.

It is an arithmetic number, because the mean of its divisors is an integer number (5359353408).

Almost surely, 2^68108440105 is an apocalyptic number.

It is an amenable number.

68108440105 is a deficient number, since it is larger than the sum of its proper divisors (17641214423).

68108440105 is a wasteful number, since it uses less digits than its factorization.

68108440105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7203528.

The product of its (nonzero) digits is 30720, while the sum is 37.

The spelling of 68108440105 in words is "sixty-eight billion, one hundred eight million, four hundred forty thousand, one hundred five".