20538875512 has 24 divisors (see below), whose sum is σ = 40643937000. Its totient is φ = 9728939664.

The previous prime is 20538875437. The next prime is 20538875519. The reversal of 20538875512 is 21557883502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20538875519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3553012 + ... + 3558787.

It is an arithmetic number, because the mean of its divisors is an integer number (1693497375).

Almost surely, 2^20538875512 is an apocalyptic number.

It is an amenable number.

20538875512 is a deficient number, since it is larger than the sum of its proper divisors (20105061488).

20538875512 is a wasteful number, since it uses less digits than its factorization.

20538875512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7111843 (or 7111820 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 46.

It can be divided in two parts, 205388 and 75512, that added together give a square (280900 = 530²).

The spelling of 20538875512 in words is "twenty billion, five hundred thirty-eight million, eight hundred seventy-five thousand, five hundred twelve".