87324002821 has 4 divisors (see below), whose sum is σ = 95262548544. Its totient is φ = 79385457100.

The previous prime is 87324002791. The next prime is 87324002849. The reversal of 87324002821 is 12820042378.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87324002821 - 2⁷ = 87324002693 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 (87324002851) 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, 3969272845 + ... + 3969272866.

It is an arithmetic number, because the mean of its divisors is an integer number (23815637136).

Almost surely, 2^87324002821 is an apocalyptic number.

It is an amenable number.

87324002821 is a deficient number, since it is larger than the sum of its proper divisors (7938545723).

87324002821 is a wasteful number, since it uses less digits than its factorization.

87324002821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7938545722.

The product of its (nonzero) digits is 43008, while the sum is 37.

The spelling of 87324002821 in words is "eighty-seven billion, three hundred twenty-four million, two thousand, eight hundred twenty-one".