223408181385 has 12 divisors (see below), whose sum is σ = 387240847812. Its totient is φ = 119151030048.

The previous prime is 223408181369. The next prime is 223408181459. The reversal of 223408181385 is 583181804322.

223408181385 is a `hidden beast` number, since 223 + 40 + 8 + 1 + 8 + 1 + 385 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 93972289401 + 129435891984 = 306549^2 + 359772^2 .

It is not a de Polignac number, because 223408181385 - 2⁴ = 223408181369 is a prime.

It is a super-2 number, since 2×223408181385² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 4964626253 = 223408181385 / (2 + 2 + 3 + 4 + 0 + 8 + 1 + 8 + 1 + 3 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 223408181385.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2482313082 + ... + 2482313171.

It is an arithmetic number, because the mean of its divisors is an integer number (32270070651).

Almost surely, 2^223408181385 is an apocalyptic number.

It is an amenable number.

223408181385 is a deficient number, since it is larger than the sum of its proper divisors (163832666427).

223408181385 is a wasteful number, since it uses less digits than its factorization.

223408181385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4964626264 (or 4964626261 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 223408181385 in words is "two hundred twenty-three billion, four hundred eight million, one hundred eighty-one thousand, three hundred eighty-five".