20452353212403 has 12 divisors (see below), whose sum is σ = 33762614826928. Its totient is φ = 11687058978480.

The previous prime is 20452353212353. The next prime is 20452353212413. The reversal of 20452353212403 is 30421235325402.

20452353212403 is a `hidden beast` number, since 2 + 0 + 4 + 5 + 2 + 35 + 3 + 212 + 403 = 666.

It is not a de Polignac number, because 20452353212403 - 2¹² = 20452353208307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20452353212413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162320263528 + ... + 162320263653.

Almost surely, 2^{20452353212403} is an apocalyptic number.

20452353212403 is a deficient number, since it is larger than the sum of its proper divisors (13310261614525).

20452353212403 is a wasteful number, since it uses less digits than its factorization.

20452353212403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324640527194 (or 324640527191 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

Adding to 20452353212403 its reverse (30421235325402), we get a palindrome (50873588537805).

The spelling of 20452353212403 in words is "twenty trillion, four hundred fifty-two billion, three hundred fifty-three million, two hundred twelve thousand, four hundred three".