68273127221 has 16 divisors (see below), whose sum is σ = 74467471680. Its totient is φ = 62215655040.

The previous prime is 68273127217. The next prime is 68273127227. The reversal of 68273127221 is 12272137286.

It is a cyclic number.

It is not a de Polignac number, because 68273127221 - 2² = 68273127217 is a prime.

It is a super-2 number, since 2×68273127221² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68273127227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 698066 + ... + 789836.

It is an arithmetic number, because the mean of its divisors is an integer number (4654216980).

Almost surely, 2^68273127221 is an apocalyptic number.

It is an amenable number.

68273127221 is a deficient number, since it is larger than the sum of its proper divisors (6194344459).

68273127221 is a wasteful number, since it uses less digits than its factorization.

68273127221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92516.

The product of its digits is 112896, while the sum is 41.

The spelling of 68273127221 in words is "sixty-eight billion, two hundred seventy-three million, one hundred twenty-seven thousand, two hundred twenty-one".