870672303584821 has 4 divisors (see below), whose sum is σ = 870924745543500. Its totient is φ = 870419861626144.

The previous prime is 870672303584807. The next prime is 870672303584833. The reversal of 870672303584821 is 128485303276078.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 159911958096900 + 710760345487921 = 12645630^2 + 26660089^2 .

It is a cyclic number.

It is not a de Polignac number, because 870672303584821 - 2¹³ = 870672303576629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870672303584891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126220974166 + ... + 126220981063.

It is an arithmetic number, because the mean of its divisors is an integer number (217731186385875).

Almost surely, 2^{870672303584821} is an apocalyptic number.

It is an amenable number.

870672303584821 is a deficient number, since it is larger than the sum of its proper divisors (252441958679).

870672303584821 is a wasteful number, since it uses less digits than its factorization.

870672303584821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252441958678.

The product of its (nonzero) digits is 108380160, while the sum is 64.

The spelling of 870672303584821 in words is "eight hundred seventy trillion, six hundred seventy-two billion, three hundred three million, five hundred eighty-four thousand, eight hundred twenty-one".