11553206240172 has 24 divisors (see below), whose sum is σ = 27154251166896. Its totient is φ = 3822958755328.

The previous prime is 11553206240161. The next prime is 11553206240231. The reversal of 11553206240172 is 27104260235511.

It is a self number, because there is not a number n which added to its sum of digits gives 11553206240172.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3513747213 + ... + 3513750500.

It is an arithmetic number, because the mean of its divisors is an integer number (1131427131954).

Almost surely, 2^{11553206240172} is an apocalyptic number.

11553206240172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11553206240172 is an abundant number, since it is smaller than the sum of its proper divisors (15601044926724).

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

11553206240172 is a wasteful number, since it uses less digits than its factorization.

11553206240172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7027497857 (or 7027497855 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

Adding to 11553206240172 its reverse (27104260235511), we get a palindrome (38657466475683).

The spelling of 11553206240172 in words is "eleven trillion, five hundred fifty-three billion, two hundred six million, two hundred forty thousand, one hundred seventy-two".