204449106870 has 48 divisors (see below), whose sum is σ = 531638003520. Its totient is φ = 54512548992.

The previous prime is 204449106853. The next prime is 204449106929. The reversal of 204449106870 is 78601944402.

204449106870 is a `hidden beast` number, since 20 + 4 + 449 + 106 + 87 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 551922 + ... + 844698.

It is an arithmetic number, because the mean of its divisors is an integer number (11075791740).

Almost surely, 2^204449106870 is an apocalyptic number.

204449106870 is an abundant number, since it is smaller than the sum of its proper divisors (327188896650).

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

204449106870 is a wasteful number, since it uses less digits than its factorization.

204449106870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300549 (or 300546 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 204449106870 in words is "two hundred four billion, four hundred forty-nine million, one hundred six thousand, eight hundred seventy".