318377773813 has 4 divisors (see below), whose sum is σ = 347321207808. Its totient is φ = 289434339820.

The previous prime is 318377773811. The next prime is 318377773853.

It is a happy number.

318377773813 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 318377773813 - 2¹ = 318377773811 is a prime.

It is a super-3 number, since 3×318377773813³ (a number of 35 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14471716981 + ... + 14471717002.

It is an arithmetic number, because the mean of its divisors is an integer number (86830301952).

Almost surely, 2^318377773813 is an apocalyptic number.

It is an amenable number.

318377773813 is a deficient number, since it is larger than the sum of its proper divisors (28943433995).

318377773813 is a wasteful number, since it uses less digits than its factorization.

318377773813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28943433994.

The product of its digits is 12446784, while the sum is 58.

The spelling of 318377773813 in words is "three hundred eighteen billion, three hundred seventy-seven million, seven hundred seventy-three thousand, eight hundred thirteen".