71742425705 has 4 divisors (see below), whose sum is σ = 86090910852. Its totient is φ = 57393940560.

The previous prime is 71742425693. The next prime is 71742425767. The reversal of 71742425705 is 50752424717.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50752424717 = 3533 ⋅14365249.

It can be written as a sum of positive squares in 2 ways, for example, as 8820215056 + 62922210649 = 93916^2 + 250843^2 .

It is not a de Polignac number, because 71742425705 - 2⁸ = 71742425449 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7174242566 + ... + 7174242575.

It is an arithmetic number, because the mean of its divisors is an integer number (21522727713).

Almost surely, 2^71742425705 is an apocalyptic number.

It is an amenable number.

71742425705 is a deficient number, since it is larger than the sum of its proper divisors (14348485147).

71742425705 is a wasteful number, since it uses less digits than its factorization.

71742425705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14348485146.

The product of its (nonzero) digits is 548800, while the sum is 44.

The spelling of 71742425705 in words is "seventy-one billion, seven hundred forty-two million, four hundred twenty-five thousand, seven hundred five".