20604720203 has 4 divisors (see below), whose sum is σ = 20852969928. Its totient is φ = 20356470480.

The previous prime is 20604720163. The next prime is 20604720209. The reversal of 20604720203 is 30202740602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20604720203 - 2¹² = 20604716107 is a prime.

It is a super-2 number, since 2×20604720203² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20604720209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124124738 + ... + 124124903.

It is an arithmetic number, because the mean of its divisors is an integer number (5213242482).

Almost surely, 2^20604720203 is an apocalyptic number.

20604720203 is a deficient number, since it is larger than the sum of its proper divisors (248249725).

20604720203 is an equidigital number, since it uses as much as digits as its factorization.

20604720203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248249724.

The product of its (nonzero) digits is 4032, while the sum is 26.

The spelling of 20604720203 in words is "twenty billion, six hundred four million, seven hundred twenty thousand, two hundred three".