318378790811 has 2 divisors, whose sum is σ = 318378790812. Its totient is φ = 318378790810.

The previous prime is 318378790787. The next prime is 318378790831. The reversal of 318378790811 is 118097873813.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 318378790811 - 2¹⁸ = 318378528667 is a prime.

It is not a weakly prime, because it can be changed into another prime (318378790831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159189395405 + 159189395406.

It is an arithmetic number, because the mean of its divisors is an integer number (159189395406).

Almost surely, 2^318378790811 is an apocalyptic number.

318378790811 is a deficient number, since it is larger than the sum of its proper divisors (1).

318378790811 is an equidigital number, since it uses as much as digits as its factorization.

318378790811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2032128, while the sum is 56.

The spelling of 318378790811 in words is "three hundred eighteen billion, three hundred seventy-eight million, seven hundred ninety thousand, eight hundred eleven".