10565665517 has 8 divisors (see below), whose sum is σ = 11540094240. Its totient is φ = 9593555760.

The previous prime is 10565665477. The next prime is 10565665541. The reversal of 10565665517 is 71556656501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10565665517 - 2¹⁰ = 10565664493 is a prime.

It is a super-2 number, since 2×10565665517² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10565665547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 570203 + ... + 588440.

It is an arithmetic number, because the mean of its divisors is an integer number (1442511780).

Almost surely, 2^10565665517 is an apocalyptic number.

It is an amenable number.

10565665517 is a deficient number, since it is larger than the sum of its proper divisors (974428723).

10565665517 is a wasteful number, since it uses less digits than its factorization.

10565665517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159483.

The product of its (nonzero) digits is 945000, while the sum is 47.

The spelling of 10565665517 in words is "ten billion, five hundred sixty-five million, six hundred sixty-five thousand, five hundred seventeen".