204245503101 has 10 divisors (see below), whose sum is σ = 305107480062. Its totient is φ = 136163668680.

The previous prime is 204245503093. The next prime is 204245503123. The reversal of 204245503101 is 101305542402.

204245503101 is a `hidden beast` number, since 2 + 0 + 4 + 2 + 4 + 550 + 3 + 101 = 666.

It can be written as a sum of positive squares in only one way, i.e., 197757200601 + 6488302500 = 444699^2 + 80550^2 .

It is not a de Polignac number, because 204245503101 - 2³ = 204245503093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204245507101) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1260774630 + ... + 1260774791.

Almost surely, 2^204245503101 is an apocalyptic number.

It is an amenable number.

204245503101 is a deficient number, since it is larger than the sum of its proper divisors (100861976961).

204245503101 is an equidigital number, since it uses as much as digits as its factorization.

204245503101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2521549433 (or 2521549424 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The spelling of 204245503101 in words is "two hundred four billion, two hundred forty-five million, five hundred three thousand, one hundred one".