23856220573221 has 8 divisors (see below), whose sum is σ = 31835929457664. Its totient is φ = 15890329368800.

The previous prime is 23856220573217. The next prime is 23856220573243. The reversal of 23856220573221 is 12237502265832.

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 23856220573221 - 2² = 23856220573217 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23856220573201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3454415976 + ... + 3454422881.

It is an arithmetic number, because the mean of its divisors is an integer number (3979491182208).

Almost surely, 2^{23856220573221} is an apocalyptic number.

It is an amenable number.

23856220573221 is a deficient number, since it is larger than the sum of its proper divisors (7979708884443).

23856220573221 is a wasteful number, since it uses less digits than its factorization.

23856220573221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6908840011.

The product of its (nonzero) digits is 2419200, while the sum is 48.

The spelling of 23856220573221 in words is "twenty-three trillion, eight hundred fifty-six billion, two hundred twenty million, five hundred seventy-three thousand, two hundred twenty-one".