55643604112121 has 8 divisors (see below), whose sum is σ = 55712549126304. Its totient is φ = 55574672218560.

The previous prime is 55643604112099. The next prime is 55643604112141. The reversal of 55643604112121 is 12121140634655.

55643604112121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55643604112121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55643604112141) 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, 5220590 + ... + 11770376.

It is an arithmetic number, because the mean of its divisors is an integer number (6964068640788).

Almost surely, 2^{55643604112121} is an apocalyptic number.

It is an amenable number.

55643604112121 is a deficient number, since it is larger than the sum of its proper divisors (68945014183).

55643604112121 is an equidigital number, since it uses as much as digits as its factorization.

55643604112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6560311.

The product of its (nonzero) digits is 172800, while the sum is 41.

Adding to 55643604112121 its reverse (12121140634655), we get a palindrome (67764744746776).

The spelling of 55643604112121 in words is "fifty-five trillion, six hundred forty-three billion, six hundred four million, one hundred twelve thousand, one hundred twenty-one".