20532543013544 has 8 divisors (see below), whose sum is σ = 38498518150410. Its totient is φ = 10266271506768.

The previous prime is 20532543013513. The next prime is 20532543013573. The reversal of 20532543013544 is 44531034523502.

It can be written as a sum of positive squares in only one way, i.e., 14337870025444 + 6194672988100 = 3786538^2 + 2488910^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1283283938339 + ... + 1283283938354.

Almost surely, 2^{20532543013544} is an apocalyptic number.

It is an amenable number.

20532543013544 is a deficient number, since it is larger than the sum of its proper divisors (17965975136866).

20532543013544 is a wasteful number, since it uses less digits than its factorization.

20532543013544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2566567876699 (or 2566567876695 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 41.

The spelling of 20532543013544 in words is "twenty trillion, five hundred thirty-two billion, five hundred forty-three million, thirteen thousand, five hundred forty-four".