223436440534421 has 4 divisors (see below), whose sum is σ = 223438311244512. Its totient is φ = 223434569824332.

The previous prime is 223436440534409. The next prime is 223436440534441. The reversal of 223436440534421 is 124435044634322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 223436440534421 - 2²⁶ = 223436373425557 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 (223436440534441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 935175875 + ... + 935414768.

It is an arithmetic number, because the mean of its divisors is an integer number (55859577811128).

Almost surely, 2^{223436440534421} is an apocalyptic number.

It is an amenable number.

223436440534421 is a deficient number, since it is larger than the sum of its proper divisors (1870710091).

223436440534421 is a wasteful number, since it uses less digits than its factorization.

223436440534421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1870710090.

The product of its (nonzero) digits is 6635520, while the sum is 47.

The spelling of 223436440534421 in words is "two hundred twenty-three trillion, four hundred thirty-six billion, four hundred forty million, five hundred thirty-four thousand, four hundred twenty-one".