87782943847 has 2 divisors, whose sum is σ = 87782943848. Its totient is φ = 87782943846.

The previous prime is 87782943821. The next prime is 87782943893. The reversal of 87782943847 is 74834928778.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87782943847 - 2²⁷ = 87648726119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87782946847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43891471923 + 43891471924.

It is an arithmetic number, because the mean of its divisors is an integer number (43891471924).

Almost surely, 2^87782943847 is an apocalyptic number.

87782943847 is a deficient number, since it is larger than the sum of its proper divisors (1).

87782943847 is an equidigital number, since it uses as much as digits as its factorization.

87782943847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151732224, while the sum is 67.

The spelling of 87782943847 in words is "eighty-seven billion, seven hundred eighty-two million, nine hundred forty-three thousand, eight hundred forty-seven".