66041743320 has 144 divisors (see below), whose sum is σ = 249678290160. Its totient is φ = 15095251584.

The previous prime is 66041743319. The next prime is 66041743321. The reversal of 66041743320 is 2334714066.

It is a happy number.

66041743320 is a `hidden beast` number, since 6 + 604 + 1 + 7 + 43 + 3 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (66041743319) and next prime (66041743321).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66041743321) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 1854292 + ... + 1889571.

It is an arithmetic number, because the mean of its divisors is an integer number (1733877015).

Almost surely, 2^66041743320 is an apocalyptic number.

66041743320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66041743320 is an abundant number, since it is smaller than the sum of its proper divisors (183636546840).

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

66041743320 is a wasteful number, since it uses less digits than its factorization.

66041743320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3743894 (or 3743880 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The spelling of 66041743320 in words is "sixty-six billion, forty-one million, seven hundred forty-three thousand, three hundred twenty".