204240500215245 has 128 divisors (see below), whose sum is σ = 419857347732480. Its totient is φ = 93301630894080.

The previous prime is 204240500215207. The next prime is 204240500215253. The reversal of 204240500215245 is 542512005042402.

204240500215245 is a `hidden beast` number, since 2 + 0 + 4 + 2 + 40 + 500 + 21 + 52 + 45 = 666.

It is not a de Polignac number, because 204240500215245 - 2²¹ = 204240498118093 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 46090644 + ... + 50327213.

It is an arithmetic number, because the mean of its divisors is an integer number (3280135529160).

Almost surely, 2^{204240500215245} is an apocalyptic number.

It is an amenable number.

204240500215245 is an abundant number, since it is smaller than the sum of its proper divisors (215616847517235).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204240500215245 is a wasteful number, since it uses less digits than its factorization.

204240500215245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96417972 (or 96417966 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 36.

Adding to 204240500215245 its reverse (542512005042402), we get a palindrome (746752505257647).

The spelling of 204240500215245 in words is "two hundred four trillion, two hundred forty billion, five hundred million, two hundred fifteen thousand, two hundred forty-five".