11223564620556 has 12 divisors (see below), whose sum is σ = 26188317447992. Its totient is φ = 3741188206848.

The previous prime is 11223564620551. The next prime is 11223564620563. The reversal of 11223564620556 is 65502646532211.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (11223564620551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 467648525845 + ... + 467648525868.

Almost surely, 2^{11223564620556} is an apocalyptic number.

It is an amenable number.

11223564620556 is an abundant number, since it is smaller than the sum of its proper divisors (14964752827436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11223564620556 is a wasteful number, since it uses less digits than its factorization.

11223564620556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935297051720 (or 935297051718 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 48.

The spelling of 11223564620556 in words is "eleven trillion, two hundred twenty-three billion, five hundred sixty-four million, six hundred twenty thousand, five hundred fifty-six".