11543121104 has 10 divisors (see below), whose sum is σ = 22364797170. Its totient is φ = 5771560544.

The previous prime is 11543121097. The next prime is 11543121137. The reversal of 11543121104 is 40112134511.

It can be written as a sum of positive squares in only one way, i.e., 8940080704 + 2603040400 = 94552^2 + 51020^2 .

It is a super-2 number, since 2×11543121104² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11543121104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360722519 + ... + 360722550.

It is an arithmetic number, because the mean of its divisors is an integer number (2236479717).

Almost surely, 2^11543121104 is an apocalyptic number.

It is an amenable number.

11543121104 is a deficient number, since it is larger than the sum of its proper divisors (10821676066).

11543121104 is an equidigital number, since it uses as much as digits as its factorization.

11543121104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721445077 (or 721445071 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 11543121104 its reverse (40112134511), we get a palindrome (51655255615).

The spelling of 11543121104 in words is "eleven billion, five hundred forty-three million, one hundred twenty-one thousand, one hundred four".