204453142142555 has 8 divisors (see below), whose sum is σ = 247275611284992. Its totient is φ = 162274619904768.

The previous prime is 204453142142551. The next prime is 204453142142563. The reversal of 204453142142555 is 555241241354402.

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 204453142142555 - 2² = 204453142142551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204453142142551) 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, 160986725462 + ... + 160986726731.

It is an arithmetic number, because the mean of its divisors is an integer number (30909451410624).

Almost surely, 2^{204453142142555} is an apocalyptic number.

204453142142555 is a deficient number, since it is larger than the sum of its proper divisors (42822469142437).

204453142142555 is a wasteful number, since it uses less digits than its factorization.

204453142142555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321973452325.

The product of its (nonzero) digits is 3840000, while the sum is 47.

Adding to 204453142142555 its reverse (555241241354402), we get a palindrome (759694383496957).

The spelling of 204453142142555 in words is "two hundred four trillion, four hundred fifty-three billion, one hundred forty-two million, one hundred forty-two thousand, five hundred fifty-five".