20452545133 has 8 divisors (see below), whose sum is σ = 21160621080. Its totient is φ = 19744656960.

The previous prime is 20452545119. The next prime is 20452545143. The reversal of 20452545133 is 33154525402.

It can be written as a sum of positive squares in 4 ways, for example, as 9123497289 + 11329047844 = 95517^2 + 106438^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20452545133 - 2⁹ = 20452544621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20452545143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196063 + ... + 281683.

It is an arithmetic number, because the mean of its divisors is an integer number (2645077635).

Almost surely, 2^20452545133 is an apocalyptic number.

It is an amenable number.

20452545133 is a deficient number, since it is larger than the sum of its proper divisors (708075947).

20452545133 is an equidigital number, since it uses as much as digits as its factorization.

20452545133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93887.

The product of its (nonzero) digits is 72000, while the sum is 34.

The spelling of 20452545133 in words is "twenty billion, four hundred fifty-two million, five hundred forty-five thousand, one hundred thirty-three".