223845078487021 has 8 divisors (see below), whose sum is σ = 233734341925440. Its totient is φ = 213968887442112.

The previous prime is 223845078487007. The next prime is 223845078487031. The reversal of 223845078487021 is 120784870548322.

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 223845078487021 - 2⁵ = 223845078486989 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 (223845078487031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3268063375 + ... + 3268131868.

It is an arithmetic number, because the mean of its divisors is an integer number (29216792740680).

Almost surely, 2^{223845078487021} is an apocalyptic number.

It is an amenable number.

223845078487021 is a deficient number, since it is larger than the sum of its proper divisors (9889263438419).

223845078487021 is a wasteful number, since it uses less digits than its factorization.

223845078487021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6536196755.

The product of its (nonzero) digits is 48168960, while the sum is 61.

The spelling of 223845078487021 in words is "two hundred twenty-three trillion, eight hundred forty-five billion, seventy-eight million, four hundred eighty-seven thousand, twenty-one".