68721541119 has 144 divisors (see below), whose sum is σ = 127721558016.
Its totient is φ = 35206617600.
The previous prime is 68721541087. The next prime is 68721541129. The reversal of 68721541119 is 91114512786.
68721541119 is a `hidden beast` number, since 6 + 8 + 7 + 215 + 411 + 19 = 666.
It is not a de Polignac number, because 68721541119 - 25 = 68721541087 is a prime.
It is a super-2 number, since 2×687215411192 (a number of 22 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68721541129) by changing a digit.
It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 203921319 + ... + 203921655.
It is an arithmetic number, because the mean of its divisors is an integer number (886955264).
Almost surely, 268721541119 is an apocalyptic number.
68721541119 is a deficient number, since it is larger than the sum of its proper divisors (59000016897).
68721541119 is a wasteful number, since it uses less digits than its factorization.
68721541119 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 826 (or 816 counting only the distinct ones).
The product of its digits is 120960, while the sum is 45.
The spelling of 68721541119 in words is "sixty-eight billion, seven hundred twenty-one million, five hundred forty-one thousand, one hundred nineteen".