87428448777 has 16 divisors (see below), whose sum is σ = 119381755328. Its totient is φ = 56882649600.

The previous prime is 87428448743. The next prime is 87428448787. The reversal of 87428448777 is 77784482478.

It is a happy number.

It is not a de Polignac number, because 87428448777 - 2¹² = 87428444681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87428448787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127228 + ... + 437085.

It is an arithmetic number, because the mean of its divisors is an integer number (7461359708).

Almost surely, 2^87428448777 is an apocalyptic number.

It is an amenable number.

87428448777 is a deficient number, since it is larger than the sum of its proper divisors (31953306551).

87428448777 is a wasteful number, since it uses less digits than its factorization.

87428448777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565560.

The product of its digits is 157351936, while the sum is 66.

The spelling of 87428448777 in words is "eighty-seven billion, four hundred twenty-eight million, four hundred forty-eight thousand, seven hundred seventy-seven".