87989098977 has 96 divisors (see below), whose sum is σ = 145814323200. Its totient is φ = 50719084416.

The previous prime is 87989098963. The next prime is 87989099071. The reversal of 87989098977 is 77989098978.

It is not a de Polignac number, because 87989098977 - 2¹¹ = 87989096929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87989098896 and 87989098905.

It is not an unprimeable number, because it can be changed into a prime (87989098957) 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 95 ways as a sum of consecutive naturals, for example, 26997174 + ... + 27000432.

It is an arithmetic number, because the mean of its divisors is an integer number (1518899200).

Almost surely, 2^87989098977 is an apocalyptic number.

It is an amenable number.

87989098977 is a deficient number, since it is larger than the sum of its proper divisors (57825224223).

87989098977 is a wasteful number, since it uses less digits than its factorization.

87989098977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3507 (or 3504 counting only the distinct ones).

The product of its (nonzero) digits is 1152216576, while the sum is 81.

Subtracting from 87989098977 its reverse (77989098978), we obtain a palindrome (9999999999).

The spelling of 87989098977 in words is "eighty-seven billion, nine hundred eighty-nine million, ninety-eight thousand, nine hundred seventy-seven".