318795428217089 has 2 divisors, whose sum is σ = 318795428217090. Its totient is φ = 318795428217088.

The previous prime is 318795428216983. The next prime is 318795428217113. The reversal of 318795428217089 is 980712824597813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170779419427600 + 148016008789489 = 13068260^2 + 12166183^2 .

It is an emirp because it is prime and its reverse (980712824597813) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318795428217089 is a prime.

It is not a weakly prime, because it can be changed into another prime (318795428207089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159397714108544 + 159397714108545.

It is an arithmetic number, because the mean of its divisors is an integer number (159397714108545).

Almost surely, 2^{318795428217089} is an apocalyptic number.

It is an amenable number.

318795428217089 is a deficient number, since it is larger than the sum of its proper divisors (1).

318795428217089 is an equidigital number, since it uses as much as digits as its factorization.

318795428217089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 487710720, while the sum is 74.

The spelling of 318795428217089 in words is "three hundred eighteen trillion, seven hundred ninety-five billion, four hundred twenty-eight million, two hundred seventeen thousand, eighty-nine".