20532543353 has 6 divisors (see below), whose sum is σ = 23884795386. Its totient is φ = 17599322832.

The previous prime is 20532543349. The next prime is 20532543377. The reversal of 20532543353 is 35334523502.

It can be written as a sum of positive squares in only one way, i.e., 16850116864 + 3682426489 = 129808^2 + 60683^2 .

It is not a de Polignac number, because 20532543353 - 2² = 20532543349 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20532543253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 209515700 + ... + 209515797.

It is an arithmetic number, because the mean of its divisors is an integer number (3980799231).

Almost surely, 2^20532543353 is an apocalyptic number.

It is an amenable number.

20532543353 is a deficient number, since it is larger than the sum of its proper divisors (3352252033).

20532543353 is an equidigital number, since it uses as much as digits as its factorization.

20532543353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419031511 (or 419031504 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 35.

The spelling of 20532543353 in words is "twenty billion, five hundred thirty-two million, five hundred forty-three thousand, three hundred fifty-three".