11554164601556 has 24 divisors (see below), whose sum is σ = 21577763644416. Its totient is φ = 5394440903040.

The previous prime is 11554164601531. The next prime is 11554164601621. The reversal of 11554164601556 is 65510646145511.

It is a super-2 number, since 2×11554164601556² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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, 668944850 + ... + 668962121.

It is an arithmetic number, because the mean of its divisors is an integer number (899073485184).

Almost surely, 2^{11554164601556} is an apocalyptic number.

It is an amenable number.

11554164601556 is a deficient number, since it is larger than the sum of its proper divisors (10023599042860).

11554164601556 is a wasteful number, since it uses less digits than its factorization.

11554164601556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337907119 (or 1337907117 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 50.

The spelling of 11554164601556 in words is "eleven trillion, five hundred fifty-four billion, one hundred sixty-four million, six hundred one thousand, five hundred fifty-six".