71647403643 has 6 divisors (see below), whose sum is σ = 103490694164. Its totient is φ = 47764935756.

The previous prime is 71647403617. The next prime is 71647403651. The reversal of 71647403643 is 34630474617.

It is not a de Polignac number, because 71647403643 - 2⁹ = 71647403131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71647403693) 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 5 ways as a sum of consecutive naturals, for example, 3980411305 + ... + 3980411322.

Almost surely, 2^71647403643 is an apocalyptic number.

71647403643 is a deficient number, since it is larger than the sum of its proper divisors (31843290521).

71647403643 is a wasteful number, since it uses less digits than its factorization.

71647403643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7960822633 (or 7960822630 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 45.

The spelling of 71647403643 in words is "seventy-one billion, six hundred forty-seven million, four hundred three thousand, six hundred forty-three".