20452453263 has 40 divisors (see below), whose sum is σ = 33553832400. Its totient is φ = 12312155520.

The previous prime is 20452453249. The next prime is 20452453291. The reversal of 20452453263 is 36235425402.

20452453263 is a `hidden beast` number, since 2 + 0 + 45 + 24 + 532 + 63 = 666.

It is not a de Polignac number, because 20452453263 - 2⁴ = 20452453247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20452453223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 55731 + ... + 209787.

It is an arithmetic number, because the mean of its divisors is an integer number (838845810).

Almost surely, 2^20452453263 is an apocalyptic number.

20452453263 is a deficient number, since it is larger than the sum of its proper divisors (13101379137).

20452453263 is a wasteful number, since it uses less digits than its factorization.

20452453263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154229 (or 154220 counting only the distinct ones).

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

Adding to 20452453263 its reverse (36235425402), we get a palindrome (56687878665).

The spelling of 20452453263 in words is "twenty billion, four hundred fifty-two million, four hundred fifty-three thousand, two hundred sixty-three".