43205421203203 has 16 divisors (see below), whose sum is σ = 49438405981440. Its totient is φ = 36987649999200.

The previous prime is 43205421203159. The next prime is 43205421203227. The reversal of 43205421203203 is 30230212450234.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43205421203203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43205421203303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27928608 + ... + 29434978.

It is an arithmetic number, because the mean of its divisors is an integer number (3089900373840).

Almost surely, 2^{43205421203203} is an apocalyptic number.

43205421203203 is a deficient number, since it is larger than the sum of its proper divisors (6232984778237).

43205421203203 is a wasteful number, since it uses less digits than its factorization.

43205421203203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511418.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 43205421203203 its reverse (30230212450234), we get a palindrome (73435633653437).

The spelling of 43205421203203 in words is "forty-three trillion, two hundred five billion, four hundred twenty-one million, two hundred three thousand, two hundred three".