223978430869 has 16 divisors (see below), whose sum is σ = 230725728000. Its totient is φ = 217331150400.

The previous prime is 223978430857. The next prime is 223978430941. The reversal of 223978430869 is 968034879322.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223978430869 is a prime.

It is a super-2 number, since 2×223978430869² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223978431869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26568147 + ... + 26576575.

It is an arithmetic number, because the mean of its divisors is an integer number (14420358000).

Almost surely, 2^223978430869 is an apocalyptic number.

It is an amenable number.

223978430869 is a deficient number, since it is larger than the sum of its proper divisors (6747297131).

223978430869 is an equidigital number, since it uses as much as digits as its factorization.

223978430869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14268.

The product of its (nonzero) digits is 31352832, while the sum is 61.

The spelling of 223978430869 in words is "two hundred twenty-three billion, nine hundred seventy-eight million, four hundred thirty thousand, eight hundred sixty-nine".