87015854509 has 8 divisors (see below), whose sum is σ = 92191583160. Its totient is φ = 81846475776.

The previous prime is 87015854467. The next prime is 87015854521. The reversal of 87015854509 is 90545851078.

It can be written as a sum of positive squares in 4 ways, for example, as 34702101225 + 52313753284 = 186285^2 + 228722^2 .

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 87015854509 - 2²⁷ = 86881636781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87015854609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1559244 + ... + 1614085.

It is an arithmetic number, because the mean of its divisors is an integer number (11523947895).

Almost surely, 2^87015854509 is an apocalyptic number.

It is an amenable number.

87015854509 is a deficient number, since it is larger than the sum of its proper divisors (5175728651).

87015854509 is a wasteful number, since it uses less digits than its factorization.

87015854509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3174959.

The product of its (nonzero) digits is 2016000, while the sum is 52.

The spelling of 87015854509 in words is "eighty-seven billion, fifteen million, eight hundred fifty-four thousand, five hundred nine".