87730719539 has 2 divisors, whose sum is σ = 87730719540. Its totient is φ = 87730719538.

The previous prime is 87730719533. The next prime is 87730719551. The reversal of 87730719539 is 93591703778.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87730719539 - 2²⁸ = 87462284083 is a prime.

It is not a weakly prime, because it can be changed into another prime (87730719533) 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, 43865359769 + 43865359770.

It is an arithmetic number, because the mean of its divisors is an integer number (43865359770).

Almost surely, 2^87730719539 is an apocalyptic number.

87730719539 is a deficient number, since it is larger than the sum of its proper divisors (1).

87730719539 is an equidigital number, since it uses as much as digits as its factorization.

87730719539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10001880, while the sum is 59.

The spelling of 87730719539 in words is "eighty-seven billion, seven hundred thirty million, seven hundred nineteen thousand, five hundred thirty-nine".