87443656261219 has 2 divisors, whose sum is σ = 87443656261220. Its totient is φ = 87443656261218.

The previous prime is 87443656261141. The next prime is 87443656261223. The reversal of 87443656261219 is 91216265634478.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87443656261219 - 2¹¹ = 87443656259171 is a prime.

It is a super-2 number, since 2×87443656261219² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87443656261279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43721828130609 + 43721828130610.

It is an arithmetic number, because the mean of its divisors is an integer number (43721828130610).

Almost surely, 2^{87443656261219} is an apocalyptic number.

87443656261219 is a deficient number, since it is larger than the sum of its proper divisors (1).

87443656261219 is an equidigital number, since it uses as much as digits as its factorization.

87443656261219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104509440, while the sum is 64.

The spelling of 87443656261219 in words is "eighty-seven trillion, four hundred forty-three billion, six hundred fifty-six million, two hundred sixty-one thousand, two hundred nineteen".