87258730519 has 4 divisors (see below), whose sum is σ = 87262583296. Its totient is φ = 87254877744.

The previous prime is 87258730499. The next prime is 87258730543. The reversal of 87258730519 is 91503785278.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87258730519 - 2²³ = 87250341911 is a prime.

It is a super-2 number, since 2×87258730519² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87258730519.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87258730319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1892214 + ... + 1937779.

It is an arithmetic number, because the mean of its divisors is an integer number (21815645824).

Almost surely, 2^87258730519 is an apocalyptic number.

87258730519 is a deficient number, since it is larger than the sum of its proper divisors (3852777).

87258730519 is a wasteful number, since it uses less digits than its factorization.

87258730519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3852776.

The product of its (nonzero) digits is 4233600, while the sum is 55.

The spelling of 87258730519 in words is "eighty-seven billion, two hundred fifty-eight million, seven hundred thirty thousand, five hundred nineteen".