67727344081 has 8 divisors (see below), whose sum is σ = 69500759328. Its totient is φ = 65959716000.

The previous prime is 67727344079. The next prime is 67727344093. The reversal of 67727344081 is 18044372776.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67727344081 - 2¹ = 67727344079 is a prime.

It is a super-2 number, since 2×67727344081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67727344031) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1423075 + ... + 1469896.

It is an arithmetic number, because the mean of its divisors is an integer number (8687594916).

Almost surely, 2^67727344081 is an apocalyptic number.

It is an amenable number.

67727344081 is a deficient number, since it is larger than the sum of its proper divisors (1773415247).

67727344081 is a wasteful number, since it uses less digits than its factorization.

67727344081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2893583.

The product of its (nonzero) digits is 1580544, while the sum is 49.

The spelling of 67727344081 in words is "sixty-seven billion, seven hundred twenty-seven million, three hundred forty-four thousand, eighty-one".