20512112005024 has 24 divisors (see below), whose sum is σ = 40384459305540. Its totient is φ = 10255741387776.

The previous prime is 20512112004977. The next prime is 20512112005039. The reversal of 20512112005024 is 42050021121502.

It can be written as a sum of positive squares in 2 ways, for example, as 20342806090000 + 169305915024 = 4510300^2 + 411468^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20512112005024.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8770489 + ... + 10860280.

Almost surely, 2^{20512112005024} is an apocalyptic number.

It is an amenable number.

20512112005024 is a deficient number, since it is larger than the sum of its proper divisors (19872347300516).

20512112005024 is a wasteful number, since it uses less digits than its factorization.

20512112005024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19663432 (or 19663424 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 20512112005024 its reverse (42050021121502), we get a palindrome (62562133126526).

The spelling of 20512112005024 in words is "twenty trillion, five hundred twelve billion, one hundred twelve million, five thousand, twenty-four".