10717918561 has 4 divisors (see below), whose sum is σ = 12249049792. Its totient is φ = 9186787332.

The previous prime is 10717918559. The next prime is 10717918577. The reversal of 10717918561 is 16581971701.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16581971701 = 86171 ⋅192431.

It is a cyclic number.

It is not a de Polignac number, because 10717918561 - 2¹ = 10717918559 is a prime.

It is a super-2 number, since 2×10717918561² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10717918591) 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, 765565605 + ... + 765565618.

It is an arithmetic number, because the mean of its divisors is an integer number (3062262448).

Almost surely, 2^10717918561 is an apocalyptic number.

It is an amenable number.

10717918561 is a deficient number, since it is larger than the sum of its proper divisors (1531131231).

10717918561 is an equidigital number, since it uses as much as digits as its factorization.

10717918561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531131230.

The product of its (nonzero) digits is 105840, while the sum is 46.

The spelling of 10717918561 in words is "ten billion, seven hundred seventeen million, nine hundred eighteen thousand, five hundred sixty-one".