11551553261441 has 8 divisors (see below), whose sum is σ = 11773921463304. Its totient is φ = 11331292815360.

The previous prime is 11551553261393. The next prime is 11551553261447. The reversal of 11551553261441 is 14416235515511.

It can be written as a sum of positive squares in 4 ways, for example, as 1555996780816 + 9995556480625 = 1247396^2 + 3161575^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11551553261441 - 2¹⁸ = 11551552999297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11551553261392 and 11551553261401.

It is not an unprimeable number, because it can be changed into a prime (11551553261447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 526927880 + ... + 526949801.

It is an arithmetic number, because the mean of its divisors is an integer number (1471740182913).

Almost surely, 2^{11551553261441} is an apocalyptic number.

It is an amenable number.

11551553261441 is a deficient number, since it is larger than the sum of its proper divisors (222368201863).

11551553261441 is a wasteful number, since it uses less digits than its factorization.

11551553261441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053877891.

The product of its digits is 360000, while the sum is 44.

Adding to 11551553261441 its reverse (14416235515511), we get a palindrome (25967788776952).

The spelling of 11551553261441 in words is "eleven trillion, five hundred fifty-one billion, five hundred fifty-three million, two hundred sixty-one thousand, four hundred forty-one".