87112299559609 has 3 divisors (see below), whose sum is σ = 87112308893007. Its totient is φ = 87112290226212.

The previous prime is 87112299559567. The next prime is 87112299559631. The reversal of 87112299559609 is 90695599221178.

The square root of 87112299559609 is 9333397.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 64391557069225 + 22720742490384 = 8024435^2 + 4766628^2 .

It is not a de Polignac number, because 87112299559609 - 2⁴⁵ = 51927927470777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87112299559679) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4666699 + ... + 14000095.

It is an arithmetic number, because the mean of its divisors is an integer number (29037436297669).

Almost surely, 2^{87112299559609} is an apocalyptic number.

87112299559609 is the 9333397-th square number.

87112299559609 is the 4666699-th centered octagonal number.

It is an amenable number.

87112299559609 is a deficient number, since it is larger than the sum of its proper divisors (9333398).

87112299559609 is an frugal number, since it uses more digits than its factorization.

87112299559609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18666794 (or 9333397 counting only the distinct ones).

The product of its (nonzero) digits is 220449600, while the sum is 73.

The spelling of 87112299559609 in words is "eighty-seven trillion, one hundred twelve billion, two hundred ninety-nine million, five hundred fifty-nine thousand, six hundred nine".