71668803425 has 6 divisors (see below), whose sum is σ = 88869316278. Its totient is φ = 57335042720.

The previous prime is 71668803361. The next prime is 71668803461. The reversal of 71668803425 is 52430886617.

It can be written as a sum of positive squares in 3 ways, for example, as 62789776 + 71606013649 = 7924^2 + 267593^2 .

It is not a de Polignac number, because 71668803425 - 2⁶ = 71668803361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1433376044 + ... + 1433376093.

It is an arithmetic number, because the mean of its divisors is an integer number (14811552713).

Almost surely, 2^71668803425 is an apocalyptic number.

It is an amenable number.

71668803425 is a deficient number, since it is larger than the sum of its proper divisors (17200512853).

71668803425 is a wasteful number, since it uses less digits than its factorization.

71668803425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2866752147 (or 2866752142 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 71668803425 in words is "seventy-one billion, six hundred sixty-eight million, eight hundred three thousand, four hundred twenty-five".