87184372899 has 32 divisors (see below), whose sum is σ = 128181118464. Its totient is φ = 52383260160.

The previous prime is 87184372897. The next prime is 87184372901. The reversal of 87184372899 is 99827348178.

It is a Cunningham number, because it is equal to 295270²-1.

It is an interprime number because it is at equal distance from previous prime (87184372897) and next prime (87184372901).

It is not a de Polignac number, because 87184372899 - 2¹ = 87184372897 is a prime.

It is a super-2 number, since 2×87184372899² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87184372897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147634 + ... + 442904.

It is an arithmetic number, because the mean of its divisors is an integer number (4005659952).

Almost surely, 2^87184372899 is an apocalyptic number.

87184372899 is a deficient number, since it is larger than the sum of its proper divisors (40996745565).

87184372899 is a wasteful number, since it uses less digits than its factorization.

87184372899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295467.

The product of its digits is 48771072, while the sum is 66.

The spelling of 87184372899 in words is "eighty-seven billion, one hundred eighty-four million, three hundred seventy-two thousand, eight hundred ninety-nine".