66541402423117 has 8 divisors (see below), whose sum is σ = 69786966306816. Its totient is φ = 63325210158672.

The previous prime is 66541402423099. The next prime is 66541402423121. The reversal of 66541402423117 is 71132420414566.

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 66541402423117 - 2¹¹ = 66541402421069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66541402427117) 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, 7342900173 + ... + 7342909234.

It is an arithmetic number, because the mean of its divisors is an integer number (8723370788352).

Almost surely, 2^{66541402423117} is an apocalyptic number.

It is an amenable number.

66541402423117 is a deficient number, since it is larger than the sum of its proper divisors (3245563883699).

66541402423117 is a wasteful number, since it uses less digits than its factorization.

66541402423117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14685809627.

The product of its (nonzero) digits is 967680, while the sum is 46.

The spelling of 66541402423117 in words is "sixty-six trillion, five hundred forty-one billion, four hundred two million, four hundred twenty-three thousand, one hundred seventeen".