205453534544 has 40 divisors (see below), whose sum is σ = 421520741928. Its totient is φ = 96675102720.

The previous prime is 205453534541. The next prime is 205453534577. The reversal of 205453534544 is 445435354502.

It can be written as a sum of positive squares in 4 ways, for example, as 52417600 + 205401116944 = 7240^2 + 453212^2 .

It is a super-2 number, since 2×205453534544² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 205453534495 and 205453534504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205453534541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3627854 + ... + 3684050.

Almost surely, 2^205453534544 is an apocalyptic number.

It is an amenable number.

205453534544 is an abundant number, since it is smaller than the sum of its proper divisors (216067207384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205453534544 is a wasteful number, since it uses less digits than its factorization.

205453534544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69663 (or 69657 counting only the distinct ones).

The product of its (nonzero) digits is 2880000, while the sum is 44.

The spelling of 205453534544 in words is "two hundred five billion, four hundred fifty-three million, five hundred thirty-four thousand, five hundred forty-four".