478806423566 has 4 divisors (see below), whose sum is σ = 718209635352. Its totient is φ = 239403211782.

The previous prime is 478806423533. The next prime is 478806423581. The reversal of 478806423566 is 665324608874.

It is a semiprime because it is the product of two primes.

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, 119701605890 + ... + 119701605893.

It is an arithmetic number, because the mean of its divisors is an integer number (179552408838).

Almost surely, 2^478806423566 is an apocalyptic number.

478806423566 is a deficient number, since it is larger than the sum of its proper divisors (239403211786).

478806423566 is a wasteful number, since it uses less digits than its factorization.

478806423566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239403211785.

The product of its (nonzero) digits is 46448640, while the sum is 59.

The spelling of 478806423566 in words is "four hundred seventy-eight billion, eight hundred six million, four hundred twenty-three thousand, five hundred sixty-six".