71244658612 has 6 divisors (see below), whose sum is σ = 124678152578. Its totient is φ = 35622329304.

The previous prime is 71244658609. The next prime is 71244658651. The reversal of 71244658612 is 21685644217.

It can be written as a sum of positive squares in only one way, i.e., 41344715556 + 29899943056 = 203334^2 + 172916^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 8905582323 + ... + 8905582330.

Almost surely, 2^71244658612 is an apocalyptic number.

It is an amenable number.

71244658612 is a deficient number, since it is larger than the sum of its proper divisors (53433493966).

71244658612 is a wasteful number, since it uses less digits than its factorization.

71244658612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17811164657 (or 17811164655 counting only the distinct ones).

The product of its digits is 645120, while the sum is 46.

The spelling of 71244658612 in words is "seventy-one billion, two hundred forty-four million, six hundred fifty-eight thousand, six hundred twelve".