11555216623442 has 8 divisors (see below), whose sum is σ = 17351685465600. Its totient is φ = 5771321468244.

The previous prime is 11555216623417. The next prime is 11555216623463. The reversal of 11555216623442 is 24432661255511.

It is a happy number.

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

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 3 ways as a sum of consecutive naturals, for example, 3143419442 + ... + 3143423117.

It is an arithmetic number, because the mean of its divisors is an integer number (2168960683200).

Almost surely, 2^{11555216623442} is an apocalyptic number.

11555216623442 is a deficient number, since it is larger than the sum of its proper divisors (5796468842158).

11555216623442 is an equidigital number, since it uses as much as digits as its factorization.

11555216623442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6286843480.

The product of its digits is 1728000, while the sum is 47.

Adding to 11555216623442 its reverse (24432661255511), we get a palindrome (35987877878953).

The spelling of 11555216623442 in words is "eleven trillion, five hundred fifty-five billion, two hundred sixteen million, six hundred twenty-three thousand, four hundred forty-two".