204105006885 has 16 divisors (see below), whose sum is σ = 351688627584. Its totient is φ = 100482464832.

The previous prime is 204105006871. The next prime is 204105006893. The reversal of 204105006885 is 588600501402.

It is not a de Polignac number, because 204105006885 - 2⁶ = 204105006821 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 523345977 + ... + 523346366.

It is an arithmetic number, because the mean of its divisors is an integer number (21980539224).

Almost surely, 2^204105006885 is an apocalyptic number.

It is an amenable number.

204105006885 is a deficient number, since it is larger than the sum of its proper divisors (147583620699).

204105006885 is a wasteful number, since it uses less digits than its factorization.

204105006885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046692364.

The product of its (nonzero) digits is 76800, while the sum is 39.

The spelling of 204105006885 in words is "two hundred four billion, one hundred five million, six thousand, eight hundred eighty-five".