20302463645 has 8 divisors (see below), whose sum is σ = 24397715160. Its totient is φ = 16218798400.

The previous prime is 20302463593. The next prime is 20302463647. The reversal of 20302463645 is 54636420302.

It can be written as a sum of positive squares in 4 ways, for example, as 11093566276 + 9208897369 = 105326^2 + 95963^2 .

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

It is not a de Polignac number, because 20302463645 - 2⁶ = 20302463581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302463647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2892710 + ... + 2899719.

It is an arithmetic number, because the mean of its divisors is an integer number (3049714395).

Almost surely, 2^20302463645 is an apocalyptic number.

It is an amenable number.

20302463645 is a deficient number, since it is larger than the sum of its proper divisors (4095251515).

20302463645 is an equidigital number, since it uses as much as digits as its factorization.

20302463645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5793135.

The product of its (nonzero) digits is 103680, while the sum is 35.

Adding to 20302463645 its reverse (54636420302), we get a palindrome (74938883947).

The spelling of 20302463645 in words is "twenty billion, three hundred two million, four hundred sixty-three thousand, six hundred forty-five".