20616165441 has 24 divisors (see below), whose sum is σ = 32507194720. Its totient is φ = 13020733152.

The previous prime is 20616165419. The next prime is 20616165463. The reversal of 20616165441 is 14456161602.

20616165441 is a `hidden beast` number, since 20 + 616 + 16 + 5 + 4 + 4 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (20616165419) and next prime (20616165463).

It is not a de Polignac number, because 20616165441 - 2⁶ = 20616165377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20616165396 and 20616165405.

It is not an unprimeable number, because it can be changed into a prime (20616165491) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2228020 + ... + 2237253.

Almost surely, 2^20616165441 is an apocalyptic number.

It is an amenable number.

20616165441 is a deficient number, since it is larger than the sum of its proper divisors (11891029279).

20616165441 is an equidigital number, since it uses as much as digits as its factorization.

20616165441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4465307 (or 4465295 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 20616165441 in words is "twenty billion, six hundred sixteen million, one hundred sixty-five thousand, four hundred forty-one".