858880220709 has 16 divisors (see below), whose sum is σ = 1308785346560. Its totient is φ = 490782890160.

The previous prime is 858880220683. The next prime is 858880220719. The reversal of 858880220709 is 907022088858.

It is not a de Polignac number, because 858880220709 - 2⁷ = 858880220581 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (858880220719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2103912 + ... + 2478750.

It is an arithmetic number, because the mean of its divisors is an integer number (81799084160).

Almost surely, 2^858880220709 is an apocalyptic number.

It is an amenable number.

858880220709 is a deficient number, since it is larger than the sum of its proper divisors (449905125851).

858880220709 is a wasteful number, since it uses less digits than its factorization.

858880220709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483960.

The product of its (nonzero) digits is 5160960, while the sum is 57.

The spelling of 858880220709 in words is "eight hundred fifty-eight billion, eight hundred eighty million, two hundred twenty thousand, seven hundred nine".