87917583443 has 2 divisors, whose sum is σ = 87917583444. Its totient is φ = 87917583442.

The previous prime is 87917583431. The next prime is 87917583517. The reversal of 87917583443 is 34438571978.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87917583443 - 2¹⁰ = 87917582419 is a prime.

It is not a weakly prime, because it can be changed into another prime (87917543443) 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, 43958791721 + 43958791722.

It is an arithmetic number, because the mean of its divisors is an integer number (43958791722).

Almost surely, 2^87917583443 is an apocalyptic number.

87917583443 is a deficient number, since it is larger than the sum of its proper divisors (1).

87917583443 is an equidigital number, since it uses as much as digits as its factorization.

87917583443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20321280, while the sum is 59.

The spelling of 87917583443 in words is "eighty-seven billion, nine hundred seventeen million, five hundred eighty-three thousand, four hundred forty-three".