861917344303 has 2 divisors, whose sum is σ = 861917344304. Its totient is φ = 861917344302.

The previous prime is 861917344297. The next prime is 861917344367. The reversal of 861917344303 is 303443719168.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 861917344303 - 2⁵ = 861917344271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (861917344903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430958672151 + 430958672152.

It is an arithmetic number, because the mean of its divisors is an integer number (430958672152).

Almost surely, 2^861917344303 is an apocalyptic number.

861917344303 is a deficient number, since it is larger than the sum of its proper divisors (1).

861917344303 is an equidigital number, since it uses as much as digits as its factorization.

861917344303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 861917344303 in words is "eight hundred sixty-one billion, nine hundred seventeen million, three hundred forty-four thousand, three hundred three".