9539663713 has 12 divisors (see below), whose sum is σ = 10407728572. Its totient is φ = 8735834880.

The previous prime is 9539663711. The next prime is 9539663719. The reversal of 9539663713 is 3173669359.

It can be written as a sum of positive squares in 6 ways, for example, as 774397584 + 8765266129 = 27828^2 + 93623^2 .

It is not a de Polignac number, because 9539663713 - 2¹ = 9539663711 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9539663711) 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, 435378 + ... + 456763.

Almost surely, 2^9539663713 is an apocalyptic number.

It is an amenable number.

9539663713 is a deficient number, since it is larger than the sum of its proper divisors (868064859).

9539663713 is a wasteful number, since it uses less digits than its factorization.

9539663713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892212 (or 892195 counting only the distinct ones).

The product of its digits is 2755620, while the sum is 52.

The square root of 9539663713 is about 97671.2020659109. The cubic root of 9539663713 is about 2120.8552169141.

The spelling of 9539663713 in words is "nine billion, five hundred thirty-nine million, six hundred sixty-three thousand, seven hundred thirteen".