204511345551123 has 8 divisors (see below), whose sum is σ = 293657316688848. Its totient is φ = 125853135723744.

The previous prime is 204511345551109. The next prime is 204511345551143. The reversal of 204511345551123 is 321155543115402.

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

It is not a de Polignac number, because 204511345551123 - 2¹⁴ = 204511345534739 is a prime.

It is a super-2 number, since 2×204511345551123² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204511345551143) 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, 2621940327540 + ... + 2621940327617.

It is an arithmetic number, because the mean of its divisors is an integer number (36707164586106).

Almost surely, 2^{204511345551123} is an apocalyptic number.

204511345551123 is a deficient number, since it is larger than the sum of its proper divisors (89145971137725).

204511345551123 is a wasteful number, since it uses less digits than its factorization.

204511345551123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5243880655173.

The product of its (nonzero) digits is 360000, while the sum is 42.

Adding to 204511345551123 its reverse (321155543115402), we get a palindrome (525666888666525).

The spelling of 204511345551123 in words is "two hundred four trillion, five hundred eleven billion, three hundred forty-five million, five hundred fifty-one thousand, one hundred twenty-three".