423944361178 has 32 divisors (see below), whose sum is σ = 688526765136. Its totient is φ = 194613608448.

The previous prime is 423944361161. The next prime is 423944361199. The reversal of 423944361178 is 871163449324.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 153603637929 + 270340723249 = 391923^2 + 519943^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4449850 + ... + 4544122.

Almost surely, 2^423944361178 is an apocalyptic number.

423944361178 is a deficient number, since it is larger than the sum of its proper divisors (264582403958).

423944361178 is a wasteful number, since it uses less digits than its factorization.

423944361178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95218.

The product of its digits is 3483648, while the sum is 52.

The spelling of 423944361178 in words is "four hundred twenty-three billion, nine hundred forty-four million, three hundred sixty-one thousand, one hundred seventy-eight".