55161666116655 has 48 divisors (see below), whose sum is σ = 108707552362080. Its totient is φ = 23733422727168.

The previous prime is 55161666116597. The next prime is 55161666116657. The reversal of 55161666116655 is 55661166616155.

It is a happy number.

55161666116655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55161666116655 - 2¹⁴ = 55161666100271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55161666116657) 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 47 ways as a sum of consecutive naturals, for example, 2207337090 + ... + 2207362079.

It is an arithmetic number, because the mean of its divisors is an integer number (2264740674210).

Almost surely, 2^{55161666116655} is an apocalyptic number.

55161666116655 is a deficient number, since it is larger than the sum of its proper divisors (53545886245425).

55161666116655 is a wasteful number, since it uses less digits than its factorization.

55161666116655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4414699208 (or 4414699201 counting only the distinct ones).

The product of its digits is 29160000, while the sum is 60.

The spelling of 55161666116655 in words is "fifty-five trillion, one hundred sixty-one billion, six hundred sixty-six million, one hundred sixteen thousand, six hundred fifty-five".