205352123055 has 16 divisors (see below), whose sum is σ = 328570045920. Its totient is φ = 109518915968.

The previous prime is 205352122991. The next prime is 205352123057. The reversal of 205352123055 is 550321253502.

It is a cyclic number.

It is not a de Polignac number, because 205352123055 - 2⁶ = 205352122991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205352123057) 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, 859261 + ... + 1071929.

It is an arithmetic number, because the mean of its divisors is an integer number (20535627870).

Almost surely, 2^205352123055 is an apocalyptic number.

205352123055 is a deficient number, since it is larger than the sum of its proper divisors (123217922865).

205352123055 is a wasteful number, since it uses less digits than its factorization.

205352123055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277050.

The product of its (nonzero) digits is 45000, while the sum is 33.

Adding to 205352123055 its reverse (550321253502), we get a palindrome (755673376557).

The spelling of 205352123055 in words is "two hundred five billion, three hundred fifty-two million, one hundred twenty-three thousand, fifty-five".