87031284643820 has 48 divisors (see below), whose sum is σ = 199406076918048. Its totient is φ = 31643721500160.

The previous prime is 87031284643801. The next prime is 87031284643921. The reversal of 87031284643820 is 2834648213078.

87031284643820 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23377937 + ... + 26843816.

It is an arithmetic number, because the mean of its divisors is an integer number (4154293269126).

Almost surely, 2^{87031284643820} is an apocalyptic number.

It is an amenable number.

87031284643820 is an abundant number, since it is smaller than the sum of its proper divisors (112374792274228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87031284643820 is a wasteful number, since it uses less digits than its factorization.

87031284643820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50229650 (or 50229648 counting only the distinct ones).

The product of its (nonzero) digits is 12386304, while the sum is 56.

The spelling of 87031284643820 in words is "eighty-seven trillion, thirty-one billion, two hundred eighty-four million, six hundred forty-three thousand, eight hundred twenty".