43666350161 has 8 divisors (see below), whose sum is σ = 52839953280. Its totient is φ = 35226635328.

The previous prime is 43666350157. The next prime is 43666350163. The reversal of 43666350161 is 16105366634.

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 43666350161 - 2² = 43666350157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43666350163) 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, 183471941 + ... + 183472178.

It is an arithmetic number, because the mean of its divisors is an integer number (6604994160).

Almost surely, 2^43666350161 is an apocalyptic number.

It is an amenable number.

43666350161 is a deficient number, since it is larger than the sum of its proper divisors (9173603119).

43666350161 is a wasteful number, since it uses less digits than its factorization.

43666350161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366944143.

The product of its (nonzero) digits is 233280, while the sum is 41.

The spelling of 43666350161 in words is "forty-three billion, six hundred sixty-six million, three hundred fifty thousand, one hundred sixty-one".