20010530443 has 2 divisors, whose sum is σ = 20010530444. Its totient is φ = 20010530442.

The previous prime is 20010530437. The next prime is 20010530483. The reversal of 20010530443 is 34403501002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20010530443 - 2¹³ = 20010522251 is a prime.

It is a super-2 number, since 2×20010530443² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20010530413) 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 as a sum of consecutive naturals, namely, 10005265221 + 10005265222.

It is an arithmetic number, because the mean of its divisors is an integer number (10005265222).

Almost surely, 2^20010530443 is an apocalyptic number.

20010530443 is a deficient number, since it is larger than the sum of its proper divisors (1).

20010530443 is an equidigital number, since it uses as much as digits as its factorization.

20010530443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 22.

The spelling of 20010530443 in words is "twenty billion, ten million, five hundred thirty thousand, four hundred forty-three".