233643242555221 has 8 divisors (see below), whose sum is σ = 243914882564160. Its totient is φ = 223381039059552.

The previous prime is 233643242555171. The next prime is 233643242555237. The reversal of 233643242555221 is 122555242346332.

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 233643242555221 - 2²³ = 233643234166613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233643242555521) 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, 2359077711 + ... + 2359176748.

It is an arithmetic number, because the mean of its divisors is an integer number (30489360320520).

Almost surely, 2^{233643242555221} is an apocalyptic number.

It is an amenable number.

233643242555221 is a deficient number, since it is larger than the sum of its proper divisors (10271640008939).

233643242555221 is a wasteful number, since it uses less digits than its factorization.

233643242555221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4718256635.

The product of its digits is 10368000, while the sum is 49.

The spelling of 233643242555221 in words is "two hundred thirty-three trillion, six hundred forty-three billion, two hundred forty-two million, five hundred fifty-five thousand, two hundred twenty-one".