204513104055 has 64 divisors (see below), whose sum is σ = 363981864960. Its totient is φ = 97375910400.

The previous prime is 204513104027. The next prime is 204513104069. The reversal of 204513104055 is 550401315402.

It is not a de Polignac number, because 204513104055 - 2²⁶ = 204445995191 is a prime.

It is a super-2 number, since 2×204513104055² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10805050 + ... + 10823960.

It is an arithmetic number, because the mean of its divisors is an integer number (5687216640).

Almost surely, 2^204513104055 is an apocalyptic number.

204513104055 is a deficient number, since it is larger than the sum of its proper divisors (159468760905).

204513104055 is a wasteful number, since it uses less digits than its factorization.

204513104055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20752.

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 204513104055 its reverse (550401315402), we get a palindrome (754914419457).

The spelling of 204513104055 in words is "two hundred four billion, five hundred thirteen million, one hundred four thousand, fifty-five".