318648177163 has 2 divisors, whose sum is σ = 318648177164. Its totient is φ = 318648177162.

The previous prime is 318648177137. The next prime is 318648177203. The reversal of 318648177163 is 361771846813.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318648177163 is a prime.

It is not a weakly prime, because it can be changed into another prime (318648172163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159324088581 + 159324088582.

It is an arithmetic number, because the mean of its divisors is an integer number (159324088582).

Almost surely, 2^318648177163 is an apocalyptic number.

318648177163 is a deficient number, since it is larger than the sum of its proper divisors (1).

318648177163 is an equidigital number, since it uses as much as digits as its factorization.

318648177163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4064256, while the sum is 55.

The spelling of 318648177163 in words is "three hundred eighteen billion, six hundred forty-eight million, one hundred seventy-seven thousand, one hundred sixty-three".