20245003165 has 8 divisors (see below), whose sum is σ = 24886540728. Its totient is φ = 15800977920.

The previous prime is 20245003151. The next prime is 20245003169. The reversal of 20245003165 is 56130054202.

It can be written as a sum of positive squares in 4 ways, for example, as 2520341209 + 17724661956 = 50203^2 + 133134^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20245003165 - 2²⁹ = 19708132253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20245003169) 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, 49377852 + ... + 49378261.

It is an arithmetic number, because the mean of its divisors is an integer number (3110817591).

Almost surely, 2^20245003165 is an apocalyptic number.

It is an amenable number.

20245003165 is a deficient number, since it is larger than the sum of its proper divisors (4641537563).

20245003165 is an equidigital number, since it uses as much as digits as its factorization.

20245003165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98756159.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 20245003165 its reverse (56130054202), we get a palindrome (76375057367).

The spelling of 20245003165 in words is "twenty billion, two hundred forty-five million, three thousand, one hundred sixty-five".