223668040172 has 6 divisors (see below), whose sum is σ = 391419070308. Its totient is φ = 111834020084.

The previous prime is 223668040171. The next prime is 223668040273. The reversal of 223668040172 is 271040866322.

It is not an unprimeable number, because it can be changed into a prime (223668040171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27958505018 + ... + 27958505025.

It is an arithmetic number, because the mean of its divisors is an integer number (65236511718).

Almost surely, 2^223668040172 is an apocalyptic number.

It is an amenable number.

223668040172 is a deficient number, since it is larger than the sum of its proper divisors (167751030136).

223668040172 is a wasteful number, since it uses less digits than its factorization.

223668040172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55917010047 (or 55917010045 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 41.

The spelling of 223668040172 in words is "two hundred twenty-three billion, six hundred sixty-eight million, forty thousand, one hundred seventy-two".