205553431153 has 16 divisors (see below), whose sum is σ = 238452866944. Its totient is φ = 173538288000.

The previous prime is 205553431087. The next prime is 205553431163. The reversal of 205553431153 is 351134355502.

It is not a de Polignac number, because 205553431153 - 2²⁹ = 205016560241 is a prime.

It is a super-2 number, since 2×205553431153² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205553431163) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4904101 + ... + 4945837.

It is an arithmetic number, because the mean of its divisors is an integer number (14903304184).

Almost surely, 2^205553431153 is an apocalyptic number.

It is an amenable number.

205553431153 is a deficient number, since it is larger than the sum of its proper divisors (32899435791).

205553431153 is a wasteful number, since it uses less digits than its factorization.

205553431153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52312.

The product of its (nonzero) digits is 135000, while the sum is 37.

Adding to 205553431153 its reverse (351134355502), we get a palindrome (556687786655).

The spelling of 205553431153 in words is "two hundred five billion, five hundred fifty-three million, four hundred thirty-one thousand, one hundred fifty-three".