66645161020343 has 8 divisors (see below), whose sum is σ = 68064361076160. Its totient is φ = 65226011710720.

The previous prime is 66645161020313. The next prime is 66645161020379. The reversal of 66645161020343 is 34302016154666.

66645161020343 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 66645161020343 - 2²⁴ = 66645144243127 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66645161020313) 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 7 ways as a sum of consecutive naturals, for example, 10026098 + ... + 15290943.

It is an arithmetic number, because the mean of its divisors is an integer number (8508045134520).

Almost surely, 2^{66645161020343} is an apocalyptic number.

66645161020343 is a deficient number, since it is larger than the sum of its proper divisors (1419200055817).

66645161020343 is a wasteful number, since it uses less digits than its factorization.

66645161020343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25373097.

The product of its (nonzero) digits is 1866240, while the sum is 47.

The spelling of 66645161020343 in words is "sixty-six trillion, six hundred forty-five billion, one hundred sixty-one million, twenty thousand, three hundred forty-three".