87282722721 has 4 divisors (see below), whose sum is σ = 116376963632. Its totient is φ = 58188481812.

The previous prime is 87282722699. The next prime is 87282722743. The reversal of 87282722721 is 12722728278.

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 an interprime number because it is at equal distance from previous prime (87282722699) and next prime (87282722743).

It is not a de Polignac number, because 87282722721 - 2¹³ = 87282714529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87282722771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14547120451 + ... + 14547120456.

It is an arithmetic number, because the mean of its divisors is an integer number (29094240908).

Almost surely, 2^87282722721 is an apocalyptic number.

It is an amenable number.

87282722721 is a deficient number, since it is larger than the sum of its proper divisors (29094240911).

87282722721 is a wasteful number, since it uses less digits than its factorization.

87282722721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29094240910.

The product of its digits is 702464, while the sum is 48.

The spelling of 87282722721 in words is "eighty-seven billion, two hundred eighty-two million, seven hundred twenty-two thousand, seven hundred twenty-one".