71440681414668 has 12 divisors (see below), whose sum is σ = 166694923300920. Its totient is φ = 23813560471552.

The previous prime is 71440681414667. The next prime is 71440681414691. The reversal of 71440681414668 is 86641418604417.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (71440681414667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2976695058933 + ... + 2976695058956.

It is an arithmetic number, because the mean of its divisors is an integer number (13891243608410).

Almost surely, 2^{71440681414668} is an apocalyptic number.

It is an amenable number.

71440681414668 is an abundant number, since it is smaller than the sum of its proper divisors (95254241886252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71440681414668 is a wasteful number, since it uses less digits than its factorization.

71440681414668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5953390117896 (or 5953390117894 counting only the distinct ones).

The product of its (nonzero) digits is 24772608, while the sum is 60.

The spelling of 71440681414668 in words is "seventy-one trillion, four hundred forty billion, six hundred eighty-one million, four hundred fourteen thousand, six hundred sixty-eight".