71530730530763 has 4 divisors (see below), whose sum is σ = 81749406320880. Its totient is φ = 61312054740648.

The previous prime is 71530730530711. The next prime is 71530730530817. The reversal of 71530730530763 is 36703503703517.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71530730530763 - 2³² = 71526435563467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71530730536763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5109337895048 + ... + 5109337895061.

It is an arithmetic number, because the mean of its divisors is an integer number (20437351580220).

Almost surely, 2^{71530730530763} is an apocalyptic number.

71530730530763 is a deficient number, since it is larger than the sum of its proper divisors (10218675790117).

71530730530763 is a wasteful number, since it uses less digits than its factorization.

71530730530763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10218675790116.

The product of its (nonzero) digits is 4167450, while the sum is 50.

The spelling of 71530730530763 in words is "seventy-one trillion, five hundred thirty billion, seven hundred thirty million, five hundred thirty thousand, seven hundred sixty-three".