318856344478 has 16 divisors (see below), whose sum is σ = 546649022304. Its totient is φ = 136643182560.

The previous prime is 318856344421. The next prime is 318856344481. The reversal of 318856344478 is 874443658813.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 585025 + ... + 989932.

It is an arithmetic number, because the mean of its divisors is an integer number (34165563894).

Almost surely, 2^318856344478 is an apocalyptic number.

318856344478 is a deficient number, since it is larger than the sum of its proper divisors (227792677826).

318856344478 is a wasteful number, since it uses less digits than its factorization.

318856344478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589427.

The product of its digits is 61931520, while the sum is 61.

The spelling of 318856344478 in words is "three hundred eighteen billion, eight hundred fifty-six million, three hundred forty-four thousand, four hundred seventy-eight".