223435154656405 has 4 divisors (see below), whose sum is σ = 268122185587692. Its totient is φ = 178748123725120.

The previous prime is 223435154656379. The next prime is 223435154656433. The reversal of 223435154656405 is 504656451534322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 175916108375569 + 47519046280836 = 13263337^2 + 6893406^2 .

It is not a de Polignac number, because 223435154656405 - 2¹⁷ = 223435154525333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22343515465636 + ... + 22343515465645.

It is an arithmetic number, because the mean of its divisors is an integer number (67030546396923).

Almost surely, 2^{223435154656405} is an apocalyptic number.

It is an amenable number.

223435154656405 is a deficient number, since it is larger than the sum of its proper divisors (44687030931287).

223435154656405 is an equidigital number, since it uses as much as digits as its factorization.

223435154656405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44687030931286.

The product of its (nonzero) digits is 51840000, while the sum is 55.

The spelling of 223435154656405 in words is "two hundred twenty-three trillion, four hundred thirty-five billion, one hundred fifty-four million, six hundred fifty-six thousand, four hundred five".