204855245537 has 32 divisors (see below), whose sum is σ = 226353014784. Its totient is φ = 184547865600.

The previous prime is 204855245501. The next prime is 204855245549. The reversal of 204855245537 is 735542558402.

It is a happy number.

It is not a de Polignac number, because 204855245537 - 2¹⁰ = 204855244513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204855245557) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57590363 + ... + 57593919.

It is an arithmetic number, because the mean of its divisors is an integer number (7073531712).

Almost surely, 2^204855245537 is an apocalyptic number.

It is an amenable number.

204855245537 is a deficient number, since it is larger than the sum of its proper divisors (21497769247).

204855245537 is a wasteful number, since it uses less digits than its factorization.

204855245537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4769.

The product of its (nonzero) digits is 6720000, while the sum is 50.

The spelling of 204855245537 in words is "two hundred four billion, eight hundred fifty-five million, two hundred forty-five thousand, five hundred thirty-seven".