223402006178 has 54 divisors (see below), whose sum is σ = 371426800401. Its totient is φ = 100730330064.

The previous prime is 223402006153. The next prime is 223402006237. The reversal of 223402006178 is 871600204322.

It can be written as a sum of positive squares in 2 ways, for example, as 191015324809 + 32386681369 = 437053^2 + 179963^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=334217.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 408412901 + ... + 408413447.

Almost surely, 2^223402006178 is an apocalyptic number.

223402006178 is a deficient number, since it is larger than the sum of its proper divisors (148024794223).

223402006178 is an frugal number, since it uses more digits than its factorization.

223402006178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216 (or 609 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The spelling of 223402006178 in words is "two hundred twenty-three billion, four hundred two million, six thousand, one hundred seventy-eight".