55644844844655 has 96 divisors (see below), whose sum is σ = 105371992627200. Its totient is φ = 26940199104000.

The previous prime is 55644844844653. The next prime is 55644844844711.

55644844844655 is a `hidden beast` number, since 5 + 5 + 6 + 4 + 4 + 84 + 4 + 84 + 465 + 5 = 666.

55644844844655 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55644844844655 - 2¹ = 55644844844653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55644844844651) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1374911070 + ... + 1374951540.

It is an arithmetic number, because the mean of its divisors is an integer number (1097624923200).

Almost surely, 2^{55644844844655} is an apocalyptic number.

55644844844655 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55644844844655 is a deficient number, since it is larger than the sum of its proper divisors (49727147782545).

55644844844655 is a wasteful number, since it uses less digits than its factorization.

55644844844655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44453 (or 44450 counting only the distinct ones).

The product of its digits is 5898240000, while the sum is 72.

The spelling of 55644844844655 in words is "fifty-five trillion, six hundred forty-four billion, eight hundred forty-four million, eight hundred forty-four thousand, six hundred fifty-five".