318856515428 has 12 divisors (see below), whose sum is σ = 608726074992. Its totient is φ = 144934779720.

The previous prime is 318856515403. The next prime is 318856515469. The reversal of 318856515428 is 824515658813.

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 3 ways as a sum of consecutive naturals, for example, 3623369450 + ... + 3623369537.

It is an arithmetic number, because the mean of its divisors is an integer number (50727172916).

Almost surely, 2^318856515428 is an apocalyptic number.

It is an amenable number.

318856515428 is a deficient number, since it is larger than the sum of its proper divisors (289869559564).

318856515428 is a wasteful number, since it uses less digits than its factorization.

318856515428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7246739002 (or 7246739000 counting only the distinct ones).

The product of its digits is 9216000, while the sum is 56.

The spelling of 318856515428 in words is "three hundred eighteen billion, eight hundred fifty-six million, five hundred fifteen thousand, four hundred twenty-eight".