205555411443401 has 8 divisors (see below), whose sum is σ = 215732444886720. Its totient is φ = 195481698136912.

The previous prime is 205555411443367. The next prime is 205555411443407. The reversal of 205555411443401 is 104344114555502.

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

It is a cyclic number.

It is not a de Polignac number, because 205555411443401 - 2²² = 205555407249097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205555411443407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25830030131 + ... + 25830038088.

It is an arithmetic number, because the mean of its divisors is an integer number (26966555610840).

Almost surely, 2^{205555411443401} is an apocalyptic number.

It is an amenable number.

205555411443401 is a deficient number, since it is larger than the sum of its proper divisors (10177033443319).

205555411443401 is a wasteful number, since it uses less digits than its factorization.

205555411443401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51660068415.

The product of its (nonzero) digits is 960000, while the sum is 44.

Adding to 205555411443401 its reverse (104344114555502), we get a palindrome (309899525998903).

The spelling of 205555411443401 in words is "two hundred five trillion, five hundred fifty-five billion, four hundred eleven million, four hundred forty-three thousand, four hundred one".