43421454445 has 12 divisors (see below), whose sum is σ = 53003883420. Its totient is φ = 34148384384.

The previous prime is 43421454437. The next prime is 43421454473. The reversal of 43421454445 is 54445412434.

It can be written as a sum of positive squares in 2 ways, for example, as 5029362724 + 38392091721 = 70918^2 + 195939^2 .

It is not a de Polignac number, because 43421454445 - 2³ = 43421454437 is a prime.

It is a super-2 number, since 2×43421454445² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43421454398 and 43421454407.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1229980 + ... + 1264789.

It is an arithmetic number, because the mean of its divisors is an integer number (4416990285).

Almost surely, 2^43421454445 is an apocalyptic number.

It is an amenable number.

43421454445 is a deficient number, since it is larger than the sum of its proper divisors (9582428975).

43421454445 is an equidigital number, since it uses as much as digits as its factorization.

43421454445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2494892 (or 2494833 counting only the distinct ones).

The product of its digits is 614400, while the sum is 40.

Adding to 43421454445 its reverse (54445412434), we get a palindrome (97866866879).

The spelling of 43421454445 in words is "forty-three billion, four hundred twenty-one million, four hundred fifty-four thousand, four hundred forty-five".