205453505043 has 12 divisors (see below), whose sum is σ = 299392424760. Its totient is φ = 135756887616.

The previous prime is 205453504999. The next prime is 205453505053. The reversal of 205453505043 is 340505354502.

205453505043 is a `hidden beast` number, since 2 + 0 + 54 + 53 + 50 + 504 + 3 = 666.

It is not a de Polignac number, because 205453505043 - 2²⁶ = 205386396179 is a prime.

It is a super-2 number, since 2×205453505043² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 205453504989 and 205453505007.

It is not an unprimeable number, because it can be changed into a prime (205453505053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101008573 + ... + 101010606.

It is an arithmetic number, because the mean of its divisors is an integer number (24949368730).

Almost surely, 2^205453505043 is an apocalyptic number.

205453505043 is a deficient number, since it is larger than the sum of its proper divisors (93938919717).

205453505043 is a wasteful number, since it uses less digits than its factorization.

205453505043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202019298 (or 202019295 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 36.

Adding to 205453505043 its reverse (340505354502), we get a palindrome (545958859545).

The spelling of 205453505043 in words is "two hundred five billion, four hundred fifty-three million, five hundred five thousand, forty-three".