11512356556441 has 4 divisors (see below), whose sum is σ = 12397922445412. Its totient is φ = 10626790667472.

The previous prime is 11512356556427. The next prime is 11512356556469. The reversal of 11512356556441 is 14465565321511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 607144848025 + 10905211708416 = 779195^2 + 3302304^2 .

It is a cyclic number.

It is not a de Polignac number, because 11512356556441 - 2¹⁹ = 11512356032153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11512356556241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 442782944466 + ... + 442782944491.

It is an arithmetic number, because the mean of its divisors is an integer number (3099480611353).

Almost surely, 2^{11512356556441} is an apocalyptic number.

It is an amenable number.

11512356556441 is a deficient number, since it is larger than the sum of its proper divisors (885565888971).

11512356556441 is an equidigital number, since it uses as much as digits as its factorization.

11512356556441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885565888970.

The product of its digits is 2160000, while the sum is 49.

The spelling of 11512356556441 in words is "eleven trillion, five hundred twelve billion, three hundred fifty-six million, five hundred fifty-six thousand, four hundred forty-one".