820206430039 has 8 divisors (see below), whose sum is σ = 840464451792. Its totient is φ = 799960455360.

The previous prime is 820206430031. The next prime is 820206430049. The reversal of 820206430039 is 930034602028.

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

It is a cyclic number.

It is not a de Polignac number, because 820206430039 - 2³ = 820206430031 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 (820206430031) 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, 2873844 + ... + 3146329.

It is an arithmetic number, because the mean of its divisors is an integer number (105058056474).

Almost surely, 2^820206430039 is an apocalyptic number.

820206430039 is a deficient number, since it is larger than the sum of its proper divisors (20258021753).

820206430039 is a wasteful number, since it uses less digits than its factorization.

820206430039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6023537.

The product of its (nonzero) digits is 62208, while the sum is 37.

The spelling of 820206430039 in words is "eight hundred twenty billion, two hundred six million, four hundred thirty thousand, thirty-nine".