204154505164556 has 12 divisors (see below), whose sum is σ = 357270816893760. Its totient is φ = 102077128909200.

The previous prime is 204154505164529. The next prime is 204154505164591. The reversal of 204154505164556 is 655461505451402.

It is a junction number, because it is equal to n+sod(n) for n = 204154505164498 and 204154505164507.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27153116 + ... + 33846723.

It is an arithmetic number, because the mean of its divisors is an integer number (29772568074480).

Almost surely, 2^{204154505164556} is an apocalyptic number.

It is an amenable number.

204154505164556 is a deficient number, since it is larger than the sum of its proper divisors (153116311729204).

204154505164556 is a wasteful number, since it uses less digits than its factorization.

204154505164556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61836544 (or 61836542 counting only the distinct ones).

The product of its (nonzero) digits is 14400000, while the sum is 53.

The spelling of 204154505164556 in words is "two hundred four trillion, one hundred fifty-four billion, five hundred five million, one hundred sixty-four thousand, five hundred fifty-six".