20542573523896 has 16 divisors (see below), whose sum is σ = 38522640399840. Its totient is φ = 10269869417280.

The previous prime is 20542573523863. The next prime is 20542573523897. The reversal of 20542573523896 is 69832537524502.

It is a super-3 number, since 3×20542573523896³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20542573523897) 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 3 ways as a sum of consecutive naturals, for example, 177106485 + ... + 177222436.

It is an arithmetic number, because the mean of its divisors is an integer number (2407665024990).

Almost surely, 2^{20542573523896} is an apocalyptic number.

It is an amenable number.

20542573523896 is a deficient number, since it is larger than the sum of its proper divisors (17980066875944).

20542573523896 is a wasteful number, since it uses less digits than its factorization.

20542573523896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354336174 (or 354336170 counting only the distinct ones).

The product of its (nonzero) digits is 108864000, while the sum is 61.

The spelling of 20542573523896 in words is "twenty trillion, five hundred forty-two billion, five hundred seventy-three million, five hundred twenty-three thousand, eight hundred ninety-six".