10565556556 has 24 divisors (see below), whose sum is σ = 19502900480. Its totient is φ = 4994443152.

The previous prime is 10565556509. The next prime is 10565556577. The reversal of 10565556556 is 65565556501.

It is a super-2 number, since 2×10565556556² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105720 + ... + 179743.

Almost surely, 2^10565556556 is an apocalyptic number.

It is an amenable number.

10565556556 is a deficient number, since it is larger than the sum of its proper divisors (8937343924).

10565556556 is a wasteful number, since it uses less digits than its factorization.

10565556556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285973 (or 285971 counting only the distinct ones).

The product of its (nonzero) digits is 3375000, while the sum is 49.

Subtracting 10565556556 from its reverse (65565556501), we obtain a palindrome (54999999945).

The spelling of 10565556556 in words is "ten billion, five hundred sixty-five million, five hundred fifty-six thousand, five hundred fifty-six".