20532135543 has 32 divisors (see below), whose sum is σ = 29986744320. Its totient is φ = 12440186880.

The previous prime is 20532135521. The next prime is 20532135619. The reversal of 20532135543 is 34553123502.

It is not a de Polignac number, because 20532135543 - 2⁶ = 20532135479 is a prime.

It is a super-2 number, since 2×20532135543² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20532137543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 724423 + ... + 752231.

It is an arithmetic number, because the mean of its divisors is an integer number (937085760).

Almost surely, 2^20532135543 is an apocalyptic number.

20532135543 is a deficient number, since it is larger than the sum of its proper divisors (9454608777).

20532135543 is a wasteful number, since it uses less digits than its factorization.

20532135543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28327.

The product of its (nonzero) digits is 54000, while the sum is 33.

The spelling of 20532135543 in words is "twenty billion, five hundred thirty-two million, one hundred thirty-five thousand, five hundred forty-three".