204405964211 has 8 divisors (see below), whose sum is σ = 211687010304. Its totient is φ = 197167874760.

The previous prime is 204405964193. The next prime is 204405964223. The reversal of 204405964211 is 112469504402.

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 204405964211 - 2³⁴ = 187226095027 is a prime.

It is a super-2 number, since 2×204405964211² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204405961211) 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, 10729475 + ... + 10748508.

It is an arithmetic number, because the mean of its divisors is an integer number (26460876288).

Almost surely, 2^204405964211 is an apocalyptic number.

204405964211 is a deficient number, since it is larger than the sum of its proper divisors (7281046093).

204405964211 is a wasteful number, since it uses less digits than its factorization.

204405964211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21478321.

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 204405964211 in words is "two hundred four billion, four hundred five million, nine hundred sixty-four thousand, two hundred eleven".