20244202624 has 16 divisors (see below), whose sum is σ = 40330247670. Its totient is φ = 10122101248.

The previous prime is 20244202621. The next prime is 20244202651. The reversal of 20244202624 is 42620244202.

It can be written as a sum of positive squares in only one way, i.e., 17646465600 + 2597737024 = 132840^2 + 50968^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 20244202592 and 20244202601.

It is not an unprimeable number, because it can be changed into a prime (20244202621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79078789 + ... + 79079044.

Almost surely, 2^20244202624 is an apocalyptic number.

It is an amenable number.

20244202624 is a deficient number, since it is larger than the sum of its proper divisors (20086045046).

20244202624 is an equidigital number, since it uses as much as digits as its factorization.

20244202624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158157847 (or 158157835 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 20244202624 its reverse (42620244202), we get a palindrome (62864446826).

The spelling of 20244202624 in words is "twenty billion, two hundred forty-four million, two hundred two thousand, six hundred twenty-four".