87824740555505 has 8 divisors (see below), whose sum is σ = 105389921021352. Its totient is φ = 70259637541248.

The previous prime is 87824740555441. The next prime is 87824740555631. The reversal of 87824740555505 is 50555504742878.

It can be written as a sum of positive squares in 4 ways, for example, as 9447502595041 + 78377237960464 = 3073679^2 + 8853092^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87824740555505 - 2⁶ = 87824740555441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16838324 + ... + 21428453.

It is an arithmetic number, because the mean of its divisors is an integer number (13173740127669).

Almost surely, 2^{87824740555505} is an apocalyptic number.

It is an amenable number.

87824740555505 is a deficient number, since it is larger than the sum of its proper divisors (17565180465847).

87824740555505 is a wasteful number, since it uses less digits than its factorization.

87824740555505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38725795.

The product of its (nonzero) digits is 313600000, while the sum is 65.

The spelling of 87824740555505 in words is "eighty-seven trillion, eight hundred twenty-four billion, seven hundred forty million, five hundred fifty-five thousand, five hundred five".