87789490088 has 8 divisors (see below), whose sum is σ = 164605293930. Its totient is φ = 43894745040.

The previous prime is 87789490043. The next prime is 87789490093. The reversal of 87789490088 is 88009498778.

It can be written as a sum of positive squares in only one way, i.e., 61552617604 + 26236872484 = 248098^2 + 161978^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×87789490088² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5486843123 + ... + 5486843138.

Almost surely, 2^87789490088 is an apocalyptic number.

It is an amenable number.

87789490088 is a deficient number, since it is larger than the sum of its proper divisors (76815803842).

87789490088 is a wasteful number, since it uses less digits than its factorization.

87789490088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10973686267 (or 10973686263 counting only the distinct ones).

The product of its (nonzero) digits is 65028096, while the sum is 68.

The spelling of 87789490088 in words is "eighty-seven billion, seven hundred eighty-nine million, four hundred ninety thousand, eighty-eight".