55222066215 has 12 divisors (see below), whose sum is σ = 95718248184. Its totient is φ = 29451768624.

The previous prime is 55222066189. The next prime is 55222066259. The reversal of 55222066215 is 51266022255.

55222066215 is a `hidden beast` number, since 5 + 5 + 2 + 2 + 20 + 6 + 621 + 5 = 666.

It is not a de Polignac number, because 55222066215 - 2¹⁷ = 55221935143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55222066215.

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 11 ways as a sum of consecutive naturals, for example, 613578469 + ... + 613578558.

It is an arithmetic number, because the mean of its divisors is an integer number (7976520682).

Almost surely, 2^55222066215 is an apocalyptic number.

55222066215 is a deficient number, since it is larger than the sum of its proper divisors (40496181969).

55222066215 is a wasteful number, since it uses less digits than its factorization.

55222066215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1227157038 (or 1227157035 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 55222066215 in words is "fifty-five billion, two hundred twenty-two million, sixty-six thousand, two hundred fifteen".