204187256306 has 48 divisors (see below), whose sum is σ = 341330008320. Its totient is φ = 91526635200.

The previous prime is 204187256293. The next prime is 204187256333. The reversal of 204187256306 is 603652781402.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16951646 + ... + 16963686.

It is an arithmetic number, because the mean of its divisors is an integer number (7111041840).

Almost surely, 2^204187256306 is an apocalyptic number.

204187256306 is a deficient number, since it is larger than the sum of its proper divisors (137142752014).

204187256306 is a wasteful number, since it uses less digits than its factorization.

204187256306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13031 (or 13020 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 204187256306 in words is "two hundred four billion, one hundred eighty-seven million, two hundred fifty-six thousand, three hundred six".