11551543442366 has 16 divisors (see below), whose sum is σ = 17486580030480. Its totient is φ = 5722685242560.

The previous prime is 11551543442363. The next prime is 11551543442399. The reversal of 11551543442366 is 66324434515511.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11551543442363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13295705 + ... + 14137851.

It is an arithmetic number, because the mean of its divisors is an integer number (1092911251905).

Almost surely, 2^{11551543442366} is an apocalyptic number.

11551543442366 is a deficient number, since it is larger than the sum of its proper divisors (5935036588114).

11551543442366 is a wasteful number, since it uses less digits than its factorization.

11551543442366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905179.

The product of its digits is 5184000, while the sum is 50.

Adding to 11551543442366 its reverse (66324434515511), we get a palindrome (77875977957877).

The spelling of 11551543442366 in words is "eleven trillion, five hundred fifty-one billion, five hundred forty-three million, four hundred forty-two thousand, three hundred sixty-six".