71530786863 has 12 divisors (see below), whose sum is σ = 103331548528. Its totient is φ = 47682898560.

The previous prime is 71530786843. The next prime is 71530786891. The reversal of 71530786863 is 36868703517.

It is not a de Polignac number, because 71530786863 - 2¹² = 71530782767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71530786813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 250498 + ... + 453663.

Almost surely, 2^71530786863 is an apocalyptic number.

71530786863 is a deficient number, since it is larger than the sum of its proper divisors (31800761665).

71530786863 is a wasteful number, since it uses less digits than its factorization.

71530786863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715454 (or 715451 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 71530786863 in words is "seventy-one billion, five hundred thirty million, seven hundred eighty-six thousand, eight hundred sixty-three".