100020045443 has 4 divisors (see below), whose sum is σ = 100023917928. Its totient is φ = 100016172960.

The previous prime is 100020045439. The next prime is 100020045469. The reversal of 100020045443 is 344540020001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344540020001 = 24439 ⋅14097959.

It is a cyclic number.

It is not a de Polignac number, because 100020045443 - 2² = 100020045439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100020045403) 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 in 3 ways as a sum of consecutive naturals, for example, 1897238 + ... + 1949243.

It is an arithmetic number, because the mean of its divisors is an integer number (25005979482).

Almost surely, 2^100020045443 is an apocalyptic number.

100020045443 is a deficient number, since it is larger than the sum of its proper divisors (3872485).

100020045443 is an equidigital number, since it uses as much as digits as its factorization.

100020045443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3872484.

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 100020045443 its reverse (344540020001), we get a palindrome (444560065444).

The spelling of 100020045443 in words is "one hundred billion, twenty million, forty-five thousand, four hundred forty-three".