318666867380 has 12 divisors (see below), whose sum is σ = 669200421540. Its totient is φ = 127466746944.

The previous prime is 318666867371. The next prime is 318666867403. The reversal of 318666867380 is 83768666813.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 189876319504 + 128790547876 = 435748^2 + 358874^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7966671665 + ... + 7966671704.

It is an arithmetic number, because the mean of its divisors is an integer number (55766701795).

Almost surely, 2^318666867380 is an apocalyptic number.

It is an amenable number.

318666867380 is an abundant number, since it is smaller than the sum of its proper divisors (350533554160).

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

318666867380 is a wasteful number, since it uses less digits than its factorization.

318666867380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15933343378 (or 15933343376 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 62.

The spelling of 318666867380 in words is "three hundred eighteen billion, six hundred sixty-six million, eight hundred sixty-seven thousand, three hundred eighty".