318625278641 has 2 divisors, whose sum is σ = 318625278642. Its totient is φ = 318625278640.

The previous prime is 318625278623. The next prime is 318625278689. The reversal of 318625278641 is 146872526813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 318185118241 + 440160400 = 564079^2 + 20980^2 .

It is a cyclic number.

It is not a de Polignac number, because 318625278641 - 2¹⁴ = 318625262257 is a prime.

It is not a weakly prime, because it can be changed into another prime (318625278541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159312639320 + 159312639321.

It is an arithmetic number, because the mean of its divisors is an integer number (159312639321).

Almost surely, 2^318625278641 is an apocalyptic number.

It is an amenable number.

318625278641 is a deficient number, since it is larger than the sum of its proper divisors (1).

318625278641 is an equidigital number, since it uses as much as digits as its factorization.

318625278641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3870720, while the sum is 53.

The spelling of 318625278641 in words is "three hundred eighteen billion, six hundred twenty-five million, two hundred seventy-eight thousand, six hundred forty-one".