820032086409 has 8 divisors (see below), whose sum is σ = 1093382204832. Its totient is φ = 546685012800.

The previous prime is 820032086399. The next prime is 820032086411. The reversal of 820032086409 is 904680230028.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 820032086409 - 2¹² = 820032082313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (820032086449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33367 + ... + 1281084.

It is an arithmetic number, because the mean of its divisors is an integer number (136672775604).

Almost surely, 2^820032086409 is an apocalyptic number.

It is an amenable number.

820032086409 is a deficient number, since it is larger than the sum of its proper divisors (273350118423).

820032086409 is a wasteful number, since it uses less digits than its factorization.

820032086409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522407.

The product of its (nonzero) digits is 165888, while the sum is 42.

The spelling of 820032086409 in words is "eight hundred twenty billion, thirty-two million, eighty-six thousand, four hundred nine".