205353413303403 has 32 divisors (see below), whose sum is σ = 306659562494976. Its totient is φ = 121558745392128.

The previous prime is 205353413303393. The next prime is 205353413303407. The reversal of 205353413303403 is 304303314353502.

It is not a de Polignac number, because 205353413303403 - 2³⁴ = 205336233434219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205353413303407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1199002375 + ... + 1199173632.

It is an arithmetic number, because the mean of its divisors is an integer number (9583111327968).

Almost surely, 2^{205353413303403} is an apocalyptic number.

205353413303403 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

205353413303403 is a deficient number, since it is larger than the sum of its proper divisors (101306149191573).

205353413303403 is a wasteful number, since it uses less digits than its factorization.

205353413303403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398176123.

The product of its (nonzero) digits is 583200, while the sum is 39.

Adding to 205353413303403 its reverse (304303314353502), we get a palindrome (509656727656905).

The spelling of 205353413303403 in words is "two hundred five trillion, three hundred fifty-three billion, four hundred thirteen million, three hundred three thousand, four hundred three".