204255146554 has 16 divisors (see below), whose sum is σ = 315152611200. Its totient is φ = 99235541664.

The previous prime is 204255146539. The next prime is 204255146569. The reversal of 204255146554 is 455641552402.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (204255146539) and next prime (204255146569).

It is a self number, because there is not a number n which added to its sum of digits gives 204255146554.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7803219 + ... + 7829350.

It is an arithmetic number, because the mean of its divisors is an integer number (19697038200).

Almost surely, 2^204255146554 is an apocalyptic number.

204255146554 is a deficient number, since it is larger than the sum of its proper divisors (110897464646).

204255146554 is a wasteful number, since it uses less digits than its factorization.

204255146554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15632757.

The product of its (nonzero) digits is 960000, while the sum is 43.

Adding to 204255146554 its reverse (455641552402), we get a palindrome (659896698956).

The spelling of 204255146554 in words is "two hundred four billion, two hundred fifty-five million, one hundred forty-six thousand, five hundred fifty-four".