66882180354841 has 8 divisors (see below), whose sum is σ = 67062570466760. Its totient is φ = 66701796026112.

The previous prime is 66882180354809. The next prime is 66882180354883. The reversal of 66882180354841 is 14845308128866.

It can be written as a sum of positive squares in 4 ways, for example, as 152233409241 + 66729946945600 = 390171^2 + 8168840^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66882180354841 - 2⁵ = 66882180354809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66882180351841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22237651 + ... + 25065463.

It is an arithmetic number, because the mean of its divisors is an integer number (8382821308345).

Almost surely, 2^{66882180354841} is an apocalyptic number.

It is an amenable number.

66882180354841 is a deficient number, since it is larger than the sum of its proper divisors (180390111919).

66882180354841 is a wasteful number, since it uses less digits than its factorization.

66882180354841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2891595.

The product of its (nonzero) digits is 70778880, while the sum is 64.

The spelling of 66882180354841 in words is "sixty-six trillion, eight hundred eighty-two billion, one hundred eighty million, three hundred fifty-four thousand, eight hundred forty-one".