20165645045363 has 8 divisors (see below), whose sum is σ = 20450384824320. Its totient is φ = 19880925172360.

The previous prime is 20165645045353. The next prime is 20165645045407. The reversal of 20165645045363 is 36354054656102.

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 20165645045363 - 2⁸ = 20165645045107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20165645045353) 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, 2930195 + ... + 6994092.

It is an arithmetic number, because the mean of its divisors is an integer number (2556298103040).

Almost surely, 2^{20165645045363} is an apocalyptic number.

20165645045363 is a deficient number, since it is larger than the sum of its proper divisors (284739778957).

20165645045363 is an equidigital number, since it uses as much as digits as its factorization.

20165645045363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9952977.

The product of its (nonzero) digits is 7776000, while the sum is 50.

The spelling of 20165645045363 in words is "twenty trillion, one hundred sixty-five billion, six hundred forty-five million, forty-five thousand, three hundred sixty-three".