318648406845 has 32 divisors (see below), whose sum is σ = 518674752000. Its totient is φ = 167002228544.

The previous prime is 318648406807. The next prime is 318648406847. The reversal of 318648406845 is 548604846813.

It is a cyclic number.

It is not a de Polignac number, because 318648406845 - 2⁶ = 318648406781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318648406847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2321914 + ... + 2455316.

It is an arithmetic number, because the mean of its divisors is an integer number (16208586000).

Almost surely, 2^318648406845 is an apocalyptic number.

It is an amenable number.

318648406845 is a deficient number, since it is larger than the sum of its proper divisors (200026345155).

318648406845 is a wasteful number, since it uses less digits than its factorization.

318648406845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136169.

The product of its (nonzero) digits is 17694720, while the sum is 57.

The spelling of 318648406845 in words is "three hundred eighteen billion, six hundred forty-eight million, four hundred six thousand, eight hundred forty-five".