318377773812 has 48 divisors (see below), whose sum is σ = 866334089600. Its totient is φ = 90965077056.

The previous prime is 318377773811. The next prime is 318377773853. The reversal of 318377773812 is 218377773813.

It is a super-2 number, since 2×318377773812² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318377773811) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 38671513 + ... + 38679744.

Almost surely, 2^318377773812 is an apocalyptic number.

It is an amenable number.

318377773812 is an abundant number, since it is smaller than the sum of its proper divisors (547956315788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

318377773812 is a wasteful number, since it uses less digits than its factorization.

318377773812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77351285 (or 77351269 counting only the distinct ones).

The product of its digits is 8297856, while the sum is 57.

Subtracting from 318377773812 its reverse (218377773813), we obtain a palindrome (99999999999).

The spelling of 318377773812 in words is "three hundred eighteen billion, three hundred seventy-seven million, seven hundred seventy-three thousand, eight hundred twelve".