204021841641 has 8 divisors (see below), whose sum is σ = 272038288704. Its totient is φ = 136009977840.

The previous prime is 204021841631. The next prime is 204021841643. The reversal of 204021841641 is 146148120402.

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

It is not a de Polignac number, because 204021841641 - 2²⁹ = 203484970729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204021841643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1040566 + ... + 1220991.

It is an arithmetic number, because the mean of its divisors is an integer number (34004786088).

Almost surely, 2^204021841641 is an apocalyptic number.

It is an amenable number.

204021841641 is a deficient number, since it is larger than the sum of its proper divisors (68016447063).

204021841641 is a wasteful number, since it uses less digits than its factorization.

204021841641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2291631.

The product of its (nonzero) digits is 12288, while the sum is 33.

The spelling of 204021841641 in words is "two hundred four billion, twenty-one million, eight hundred forty-one thousand, six hundred forty-one".