205135404154143 has 8 divisors (see below), whose sum is σ = 273513943542528. Its totient is φ = 136756900434264.

The previous prime is 205135404154133. The next prime is 205135404154159. The reversal of 205135404154143 is 341451404531502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 205135404154143 - 2²⁵ = 205135370599711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205135404154095 and 205135404154104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205135404154133) 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, 10612746 + ... + 22867032.

It is an arithmetic number, because the mean of its divisors is an integer number (34189242942816).

Almost surely, 2^{205135404154143} is an apocalyptic number.

205135404154143 is a deficient number, since it is larger than the sum of its proper divisors (68378539388385).

205135404154143 is a wasteful number, since it uses less digits than its factorization.

205135404154143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17834253.

The product of its (nonzero) digits is 576000, while the sum is 42.

Adding to 205135404154143 its reverse (341451404531502), we get a palindrome (546586808685645).

The spelling of 205135404154143 in words is "two hundred five trillion, one hundred thirty-five billion, four hundred four million, one hundred fifty-four thousand, one hundred forty-three".