204462643442155 has 8 divisors (see below), whose sum is σ = 280405911006432. Its totient is φ = 140202955503168.

The previous prime is 204462643442149. The next prime is 204462643442209. The reversal of 204462643442155 is 551244346264402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204462643442155 - 2⁹ = 204462643441643 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2920894906282 + ... + 2920894906351.

It is an arithmetic number, because the mean of its divisors is an integer number (35050738875804).

Almost surely, 2^{204462643442155} is an apocalyptic number.

204462643442155 is a deficient number, since it is larger than the sum of its proper divisors (75943267564277).

204462643442155 is an equidigital number, since it uses as much as digits as its factorization.

204462643442155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5841789812645.

The product of its (nonzero) digits is 22118400, while the sum is 52.

The spelling of 204462643442155 in words is "two hundred four trillion, four hundred sixty-two billion, six hundred forty-three million, four hundred forty-two thousand, one hundred fifty-five".