55222711564986 has 128 divisors (see below), whose sum is σ = 141539543907840. Its totient is φ = 15632735698944.

The previous prime is 55222711564973. The next prime is 55222711564987. The reversal of 55222711564986 is 68946511722255.

55222711564986 is a `hidden beast` number, since 5 + 5 + 2 + 2 + 27 + 115 + 6 + 498 + 6 = 666.

55222711564986 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 (63).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55222711564987) 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 63 ways as a sum of consecutive naturals, for example, 120780586 + ... + 121236938.

It is an arithmetic number, because the mean of its divisors is an integer number (1105777686780).

Almost surely, 2^{55222711564986} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55222711564986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70769771953920).

55222711564986 is an abundant number, since it is smaller than the sum of its proper divisors (86316832342854).

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

55222711564986 is a wasteful number, since it uses less digits than its factorization.

55222711564986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459317 (or 459311 counting only the distinct ones).

The product of its digits is 72576000, while the sum is 63.

The spelling of 55222711564986 in words is "fifty-five trillion, two hundred twenty-two billion, seven hundred eleven million, five hundred sixty-four thousand, nine hundred eighty-six".