316640878843 has 2 divisors, whose sum is σ = 316640878844. Its totient is φ = 316640878842.

The previous prime is 316640878831. The next prime is 316640878861. The reversal of 316640878843 is 348878046613.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-316640878843 is a prime.

It is a super-2 number, since 2×316640878843² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (316640878643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158320439421 + 158320439422.

It is an arithmetic number, because the mean of its divisors is an integer number (158320439422).

Almost surely, 2^316640878843 is an apocalyptic number.

316640878843 is a deficient number, since it is larger than the sum of its proper divisors (1).

316640878843 is an equidigital number, since it uses as much as digits as its factorization.

316640878843 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18579456, while the sum is 58.

The spelling of 316640878843 in words is "three hundred sixteen billion, six hundred forty million, eight hundred seventy-eight thousand, eight hundred forty-three".