20512112005039 has 2 divisors, whose sum is σ = 20512112005040. Its totient is φ = 20512112005038.

The previous prime is 20512112004977. The next prime is 20512112005157. The reversal of 20512112005039 is 93050021121502.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20512112005039 is a prime.

It is a super-2 number, since 2×20512112005039² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20512112005039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20512112006039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10256056002519 + 10256056002520.

It is an arithmetic number, because the mean of its divisors is an integer number (10256056002520).

Almost surely, 2^{20512112005039} is an apocalyptic number.

20512112005039 is a deficient number, since it is larger than the sum of its proper divisors (1).

20512112005039 is an equidigital number, since it uses as much as digits as its factorization.

20512112005039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 20512112005039 in words is "twenty trillion, five hundred twelve billion, one hundred twelve million, five thousand, thirty-nine".