204840226881 has 12 divisors (see below), whose sum is σ = 297118323840. Its totient is φ = 135988768440.

The previous prime is 204840226879. The next prime is 204840226889. The reversal of 204840226881 is 188622048402.

204840226881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 204840226881 - 2¹ = 204840226879 is a prime.

It is a super-2 number, since 2×204840226881² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (204840226889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47612965 + ... + 47617266.

It is an arithmetic number, because the mean of its divisors is an integer number (24759860320).

Almost surely, 2^204840226881 is an apocalyptic number.

It is an amenable number.

204840226881 is a deficient number, since it is larger than the sum of its proper divisors (92278096959).

204840226881 is a wasteful number, since it uses less digits than its factorization.

204840226881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95230476 (or 95230473 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 45.

The spelling of 204840226881 in words is "two hundred four billion, eight hundred forty million, two hundred twenty-six thousand, eight hundred eighty-one".