20004357543413 has 2 divisors, whose sum is σ = 20004357543414. Its totient is φ = 20004357543412.

The previous prime is 20004357543407. The next prime is 20004357543421. The reversal of 20004357543413 is 31434575340002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15091228176049 + 4913129367364 = 3884743^2 + 2216558^2 .

It is a cyclic number.

It is not a de Polignac number, because 20004357543413 - 2²⁶ = 20004290434549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20004357543463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10002178771706 + 10002178771707.

It is an arithmetic number, because the mean of its divisors is an integer number (10002178771707).

Almost surely, 2^{20004357543413} is an apocalyptic number.

It is an amenable number.

20004357543413 is a deficient number, since it is larger than the sum of its proper divisors (1).

20004357543413 is an equidigital number, since it uses as much as digits as its factorization.

20004357543413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 604800, while the sum is 41.

The spelling of 20004357543413 in words is "twenty trillion, four billion, three hundred fifty-seven million, five hundred forty-three thousand, four hundred thirteen".