318856516652 has 6 divisors (see below), whose sum is σ = 557998904148. Its totient is φ = 159428258324.

The previous prime is 318856516637. The next prime is 318856516669. The reversal of 318856516652 is 256615658813.

It is a happy number.

It is a super-2 number, since 2×318856516652² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39857064578 + ... + 39857064585.

It is an arithmetic number, because the mean of its divisors is an integer number (92999817358).

Almost surely, 2^318856516652 is an apocalyptic number.

It is an amenable number.

318856516652 is a deficient number, since it is larger than the sum of its proper divisors (239142387496).

318856516652 is a wasteful number, since it uses less digits than its factorization.

318856516652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79714129167 (or 79714129165 counting only the distinct ones).

The product of its digits is 10368000, while the sum is 56.

The spelling of 318856516652 in words is "three hundred eighteen billion, eight hundred fifty-six million, five hundred sixteen thousand, six hundred fifty-two".