223815457009 has 4 divisors (see below), whose sum is σ = 225523972080. Its totient is φ = 222106941940.

The previous prime is 223815457007. The next prime is 223815457027. The reversal of 223815457009 is 900754518322.

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, and also an emirpimes, since its reverse is a distinct semiprime: 900754518322 = 2 ⋅450377259161.

It is a cyclic number.

It is not a de Polignac number, because 223815457009 - 2¹ = 223815457007 is a prime.

It is a super-2 number, since 2×223815457009² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 223815457009.

It is not an unprimeable number, because it can be changed into a prime (223815457007) 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, 854257339 + ... + 854257600.

It is an arithmetic number, because the mean of its divisors is an integer number (56380993020).

Almost surely, 2^223815457009 is an apocalyptic number.

It is an amenable number.

223815457009 is a deficient number, since it is larger than the sum of its proper divisors (1708515071).

223815457009 is a wasteful number, since it uses less digits than its factorization.

223815457009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708515070.

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 223815457009 in words is "two hundred twenty-three billion, eight hundred fifteen million, four hundred fifty-seven thousand, nine".