323147178478 has 4 divisors (see below), whose sum is σ = 484720767720. Its totient is φ = 161573589238.

The previous prime is 323147178451. The next prime is 323147178493. The reversal of 323147178478 is 874871741323.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 874871741323 = 5743 ⋅152337061.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80786794618 + ... + 80786794621.

It is an arithmetic number, because the mean of its divisors is an integer number (121180191930).

Almost surely, 2^323147178478 is an apocalyptic number.

323147178478 is a deficient number, since it is larger than the sum of its proper divisors (161573589242).

323147178478 is a wasteful number, since it uses less digits than its factorization.

323147178478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161573589241.

The product of its digits is 6322176, while the sum is 55.

The spelling of 323147178478 in words is "three hundred twenty-three billion, one hundred forty-seven million, one hundred seventy-eight thousand, four hundred seventy-eight".