205360555554461 has 16 divisors (see below), whose sum is σ = 209275636003200. Its totient is φ = 201459976962048.

The previous prime is 205360555554431. The next prime is 205360555554467. The reversal of 205360555554461 is 164455555063502.

It is a cyclic number.

It is not a de Polignac number, because 205360555554461 - 2¹⁴ = 205360555538077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 205360555554397 and 205360555554406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205360555554467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1485800525 + ... + 1485938733.

It is an arithmetic number, because the mean of its divisors is an integer number (13079727250200).

Almost surely, 2^{205360555554461} is an apocalyptic number.

It is an amenable number.

205360555554461 is a deficient number, since it is larger than the sum of its proper divisors (3915080448739).

205360555554461 is a wasteful number, since it uses less digits than its factorization.

205360555554461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190468.

The product of its (nonzero) digits is 54000000, while the sum is 56.

The spelling of 205360555554461 in words is "two hundred five trillion, three hundred sixty billion, five hundred fifty-five million, five hundred fifty-four thousand, four hundred sixty-one".