11166520326556 has 24 divisors (see below), whose sum is σ = 22615737374720. Its totient is φ = 4725073699632.

The previous prime is 11166520326553. The next prime is 11166520326571. The reversal of 11166520326556 is 65562302566111.

It is a happy number.

It is a super-3 number, since 3×11166520326556³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11166520326553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2524075620 + ... + 2524080043.

Almost surely, 2^{11166520326556} is an apocalyptic number.

It is an amenable number.

11166520326556 is an abundant number, since it is smaller than the sum of its proper divisors (11449217048164).

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

11166520326556 is a wasteful number, since it uses less digits than its factorization.

11166520326556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5048155753 (or 5048155751 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 49.

The spelling of 11166520326556 in words is "eleven trillion, one hundred sixty-six billion, five hundred twenty million, three hundred twenty-six thousand, five hundred fifty-six".