87288788889 has 12 divisors (see below), whose sum is σ = 130753577136. Its totient is φ = 58192525764.

The previous prime is 87288788869. The next prime is 87288788911. The reversal of 87288788889 is 98888788278.

It is not a de Polignac number, because 87288788889 - 2¹⁷ = 87288657817 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is not an unprimeable number, because it can be changed into a prime (87288788869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 179606319 + ... + 179606804.

It is an arithmetic number, because the mean of its divisors is an integer number (10896131428).

Almost surely, 2^87288788889 is an apocalyptic number.

It is an amenable number.

87288788889 is a deficient number, since it is larger than the sum of its proper divisors (43464788247).

87288788889 is an equidigital number, since it uses as much as digits as its factorization.

87288788889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359213138 (or 359213126 counting only the distinct ones).

The product of its digits is 1849688064, while the sum is 81.

The spelling of 87288788889 in words is "eighty-seven billion, two hundred eighty-eight million, seven hundred eighty-eight thousand, eight hundred eighty-nine".