20446005203 has 16 divisors (see below), whose sum is σ = 23183758080. Its totient is φ = 17875201824.

The previous prime is 20446005197. The next prime is 20446005211. The reversal of 20446005203 is 30250064402.

It is not a de Polignac number, because 20446005203 - 2¹⁰ = 20446004179 is a prime.

It is a super-2 number, since 2×20446005203² (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 (20446005103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1202600 + ... + 1219482.

It is an arithmetic number, because the mean of its divisors is an integer number (1448984880).

Almost surely, 2^20446005203 is an apocalyptic number.

20446005203 is a deficient number, since it is larger than the sum of its proper divisors (2737752877).

20446005203 is a wasteful number, since it uses less digits than its factorization.

20446005203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21818.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 20446005203 its reverse (30250064402), we get a palindrome (50696069605).

The spelling of 20446005203 in words is "twenty billion, four hundred forty-six million, five thousand, two hundred three".