3443512020581 has 2 divisors, whose sum is σ = 3443512020582. Its totient is φ = 3443512020580.

The previous prime is 3443512020293. The next prime is 3443512020587. The reversal of 3443512020581 is 1850202153443.

3443512020581 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3288800385025 + 154711635556 = 1813505^2 + 393334^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3443512020581 is a prime.

It is a super-2 number, since 2×3443512020581² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3443512020587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1721756010290 + 1721756010291.

It is an arithmetic number, because the mean of its divisors is an integer number (1721756010291).

Almost surely, 2^{3443512020581} is an apocalyptic number.

It is an amenable number.

3443512020581 is a deficient number, since it is larger than the sum of its proper divisors (1).

3443512020581 is an equidigital number, since it uses as much as digits as its factorization.

3443512020581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 3443512020581 in words is "three trillion, four hundred forty-three billion, five hundred twelve million, twenty thousand, five hundred eighty-one".