55064420621144 has 128 divisors (see below), whose sum is σ = 113954480640000. Its totient is φ = 24736378060800.

The previous prime is 55064420621123. The next prime is 55064420621257. The reversal of 55064420621144 is 44112602446055.

55064420621144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 55064420621095 and 55064420621104.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 18059828132 + ... + 18059831180.

It is an arithmetic number, because the mean of its divisors is an integer number (890269380000).

Almost surely, 2^{55064420621144} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55064420621144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56977240320000).

55064420621144 is an abundant number, since it is smaller than the sum of its proper divisors (58890060018856).

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

55064420621144 is a wasteful number, since it uses less digits than its factorization.

55064420621144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6529 (or 6525 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 44.

The spelling of 55064420621144 in words is "fifty-five trillion, sixty-four billion, four hundred twenty million, six hundred twenty-one thousand, one hundred forty-four".