318854788066 has 4 divisors (see below), whose sum is σ = 478282182102. Its totient is φ = 159427394032.

The previous prime is 318854788037. The next prime is 318854788079. The reversal of 318854788066 is 660887458813.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 660887458813 = 4919 ⋅134354027.

It can be written as a sum of positive squares in only one way, i.e., 173621389041 + 145233399025 = 416679^2 + 381095^2 .

It is a super-2 number, since 2×318854788066² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 318854787989 and 318854788007.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79713697015 + ... + 79713697018.

Almost surely, 2^318854788066 is an apocalyptic number.

318854788066 is a deficient number, since it is larger than the sum of its proper divisors (159427394036).

318854788066 is a wasteful number, since it uses less digits than its factorization.

318854788066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159427394035.

The product of its (nonzero) digits is 61931520, while the sum is 64.

The spelling of 318854788066 in words is "three hundred eighteen billion, eight hundred fifty-four million, seven hundred eighty-eight thousand, sixty-six".