87090644447109 has 16 divisors (see below), whose sum is σ = 129023370532800. Its totient is φ = 58060342523088.

The previous prime is 87090644447083. The next prime is 87090644447173. The reversal of 87090644447109 is 90174444609078.

87090644447109 is a `hidden beast` number, since 8 + 70 + 90 + 6 + 4 + 4 + 4 + 471 + 0 + 9 = 666.

It is not a de Polignac number, because 87090644447109 - 2⁵ = 87090644447077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87090644447809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19530247 + ... + 23571419.

It is an arithmetic number, because the mean of its divisors is an integer number (8063960658300).

Almost surely, 2^{87090644447109} is an apocalyptic number.

It is an amenable number.

87090644447109 is a deficient number, since it is larger than the sum of its proper divisors (41932726085691).

87090644447109 is a wasteful number, since it uses less digits than its factorization.

87090644447109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4839361 (or 4839355 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 63.

The spelling of 87090644447109 in words is "eighty-seven trillion, ninety billion, six hundred forty-four million, four hundred forty-seven thousand, one hundred nine".