87583609999 has 4 divisors (see below), whose sum is σ = 87587535280. Its totient is φ = 87579684720.

The previous prime is 87583609963. The next prime is 87583610027. The reversal of 87583609999 is 99990638578.

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 87583609999 - 2⁷ = 87583609871 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 (87583609499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1928979 + ... + 1973860.

It is an arithmetic number, because the mean of its divisors is an integer number (21896883820).

Almost surely, 2^87583609999 is an apocalyptic number.

87583609999 is a deficient number, since it is larger than the sum of its proper divisors (3925281).

87583609999 is a wasteful number, since it uses less digits than its factorization.

87583609999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3925280.

The product of its (nonzero) digits is 264539520, while the sum is 73.

The spelling of 87583609999 in words is "eighty-seven billion, five hundred eighty-three million, six hundred nine thousand, nine hundred ninety-nine".