71030707643 has 24 divisors (see below), whose sum is σ = 87292025568. Its totient is φ = 56590679808.

The previous prime is 71030707613. The next prime is 71030707711. The reversal of 71030707643 is 34670703017.

It is not a de Polignac number, because 71030707643 - 2⁸ = 71030707387 is a prime.

It is a super-2 number, since 2×71030707643² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71030707597 and 71030707606.

It is not an unprimeable number, because it can be changed into a prime (71030707613) 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 23 ways as a sum of consecutive naturals, for example, 131246 + ... + 399107.

It is an arithmetic number, because the mean of its divisors is an integer number (3637167732).

Almost surely, 2^71030707643 is an apocalyptic number.

71030707643 is a deficient number, since it is larger than the sum of its proper divisors (16261317925).

71030707643 is a wasteful number, since it uses less digits than its factorization.

71030707643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530451 (or 530432 counting only the distinct ones).

The product of its (nonzero) digits is 74088, while the sum is 38.

The spelling of 71030707643 in words is "seventy-one billion, thirty million, seven hundred seven thousand, six hundred forty-three".