66556122453184 has 112 divisors (see below), whose sum is σ = 162595973284416. Its totient is φ = 26322533683200.

The previous prime is 66556122453103. The next prime is 66556122453241. The reversal of 66556122453184 is 48135422165566.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19260114 + ... + 22451374.

It is an arithmetic number, because the mean of its divisors is an integer number (1451749761468).

Almost surely, 2^{66556122453184} is an apocalyptic number.

66556122453184 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66556122453184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81297986642208).

66556122453184 is an abundant number, since it is smaller than the sum of its proper divisors (96039850831232).

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

66556122453184 is a wasteful number, since it uses less digits than its factorization.

66556122453184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3194874 (or 3194864 counting only the distinct ones).

The product of its digits is 41472000, while the sum is 58.

The spelling of 66556122453184 in words is "sixty-six trillion, five hundred fifty-six billion, one hundred twenty-two million, four hundred fifty-three thousand, one hundred eighty-four".