193800666745 has 8 divisors (see below), whose sum is σ = 265783771584. Its totient is φ = 132891885744.

The previous prime is 193800666743. The next prime is 193800666751. The reversal of 193800666745 is 547666008391.

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 193800666745 - 2¹ = 193800666743 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (193800666743) 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, 2768580919 + ... + 2768580988.

It is an arithmetic number, because the mean of its divisors is an integer number (33222971448).

Almost surely, 2^193800666745 is an apocalyptic number.

It is an amenable number.

193800666745 is a deficient number, since it is larger than the sum of its proper divisors (71983104839).

193800666745 is an equidigital number, since it uses as much as digits as its factorization.

193800666745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5537161919.

The product of its (nonzero) digits is 6531840, while the sum is 55.

The spelling of 193800666745 in words is "one hundred ninety-three billion, eight hundred million, six hundred sixty-six thousand, seven hundred forty-five".