205443021452 has 24 divisors (see below), whose sum is σ = 367320683520. Its totient is φ = 100495992080.

The previous prime is 205443021449. The next prime is 205443021467. The reversal of 205443021452 is 254120344502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259949 + ... + 691707.

It is an arithmetic number, because the mean of its divisors is an integer number (15305028480).

Almost surely, 2^205443021452 is an apocalyptic number.

It is an amenable number.

205443021452 is a deficient number, since it is larger than the sum of its proper divisors (161877662068).

205443021452 is a wasteful number, since it uses less digits than its factorization.

205443021452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434341 (or 434339 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 205443021452 its reverse (254120344502), we get a palindrome (459563365954).

The spelling of 205443021452 in words is "two hundred five billion, four hundred forty-three million, twenty-one thousand, four hundred fifty-two".