871380816360433 has 2 divisors, whose sum is σ = 871380816360434. Its totient is φ = 871380816360432.

The previous prime is 871380816360413. The next prime is 871380816360487. The reversal of 871380816360433 is 334063618083178.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 833928949997584 + 37451866362849 = 28877828^2 + 6119793^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-871380816360433 is a prime.

It is not a weakly prime, because it can be changed into another prime (871380816360403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435690408180216 + 435690408180217.

It is an arithmetic number, because the mean of its divisors is an integer number (435690408180217).

Almost surely, 2^{871380816360433} is an apocalyptic number.

It is an amenable number.

871380816360433 is a deficient number, since it is larger than the sum of its proper divisors (1).

871380816360433 is an equidigital number, since it uses as much as digits as its factorization.

871380816360433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41803776, while the sum is 61.

The spelling of 871380816360433 in words is "eight hundred seventy-one trillion, three hundred eighty billion, eight hundred sixteen million, three hundred sixty thousand, four hundred thirty-three".