423423224144497 has 4 divisors (see below), whose sum is σ = 423444595144180. Its totient is φ = 423401853144816.

The previous prime is 423423224144491. The next prime is 423423224144537. The reversal of 423423224144497 is 794441422324324.

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 5102760227041 + 418320463917456 = 2258929^2 + 20452884^2 .

It is a cyclic number.

It is not a de Polignac number, because 423423224144497 - 2²⁷ = 423423089926769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423423224144491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10685470122 + ... + 10685509747.

It is an arithmetic number, because the mean of its divisors is an integer number (105861148786045).

Almost surely, 2^{423423224144497} is an apocalyptic number.

It is an amenable number.

423423224144497 is a deficient number, since it is larger than the sum of its proper divisors (21370999683).

423423224144497 is a wasteful number, since it uses less digits than its factorization.

423423224144497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21370999682.

The product of its digits is 37158912, while the sum is 55.

The spelling of 423423224144497 in words is "four hundred twenty-three trillion, four hundred twenty-three billion, two hundred twenty-four million, one hundred forty-four thousand, four hundred ninety-seven".