204040240605 has 48 divisors (see below), whose sum is σ = 362335244544. Its totient is φ = 106169781120.

The previous prime is 204040240603. The next prime is 204040240609. The reversal of 204040240605 is 506042040402.

It is not a de Polignac number, because 204040240605 - 2¹ = 204040240603 is a prime.

It is a super-2 number, since 2×204040240605² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204040240603) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 518290 + ... + 822620.

It is an arithmetic number, because the mean of its divisors is an integer number (7548650928).

Almost surely, 2^204040240605 is an apocalyptic number.

It is an amenable number.

204040240605 is a deficient number, since it is larger than the sum of its proper divisors (158295003939).

204040240605 is a wasteful number, since it uses less digits than its factorization.

204040240605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304706 (or 304703 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The spelling of 204040240605 in words is "two hundred four billion, forty million, two hundred forty thousand, six hundred five".