68121218108896 has 24 divisors (see below), whose sum is σ = 134473202191944. Its totient is φ = 33969293742720.

The previous prime is 68121218108833. The next prime is 68121218108897. The reversal of 68121218108896 is 69880181212186.

It is a super-3 number, since 3×68121218108896³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68121218108897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2853591370 + ... + 2853615241.

It is an arithmetic number, because the mean of its divisors is an integer number (5603050091331).

Almost surely, 2^{68121218108896} is an apocalyptic number.

It is an amenable number.

68121218108896 is a deficient number, since it is larger than the sum of its proper divisors (66351984083048).

68121218108896 is a wasteful number, since it uses less digits than its factorization.

68121218108896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5707206994 (or 5707206986 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 61.

The spelling of 68121218108896 in words is "sixty-eight trillion, one hundred twenty-one billion, two hundred eighteen million, one hundred eight thousand, eight hundred ninety-six".