11553564218388 has 96 divisors (see below), whose sum is σ = 28006779924480. Its totient is φ = 3703017669120.

The previous prime is 11553564218293. The next prime is 11553564218407. The reversal of 11553564218388 is 88381246535511.

It is a super-2 number, since 2×11553564218388² (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 31 ways as a sum of consecutive naturals, for example, 224145523 + ... + 224197061.

It is an arithmetic number, because the mean of its divisors is an integer number (291737290880).

Almost surely, 2^{11553564218388} is an apocalyptic number.

It is an amenable number.

11553564218388 is an abundant number, since it is smaller than the sum of its proper divisors (16453215706092).

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

11553564218388 is a wasteful number, since it uses less digits than its factorization.

11553564218388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55437 (or 55435 counting only the distinct ones).

The product of its digits is 27648000, while the sum is 60.

The spelling of 11553564218388 in words is "eleven trillion, five hundred fifty-three billion, five hundred sixty-four million, two hundred eighteen thousand, three hundred eighty-eight".