55644123223230 has 64 divisors (see below), whose sum is σ = 134113797439488. Its totient is φ = 14775405684480.

The previous prime is 55644123223181. The next prime is 55644123223231. The reversal of 55644123223230 is 3232232144655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55644123223231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9917379 + ... + 14479041.

It is an arithmetic number, because the mean of its divisors is an integer number (2095528084992).

Almost surely, 2^{55644123223230} is an apocalyptic number.

55644123223230 is an abundant number, since it is smaller than the sum of its proper divisors (78469674216258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55644123223230 is a wasteful number, since it uses less digits than its factorization.

55644123223230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4563401.

The product of its (nonzero) digits is 1036800, while the sum is 42.

Adding to 55644123223230 its reverse (3232232144655), we get a palindrome (58876355367885).

The spelling of 55644123223230 in words is "fifty-five trillion, six hundred forty-four billion, one hundred twenty-three million, two hundred twenty-three thousand, two hundred thirty".