1580859085809 has 4 divisors (see below), whose sum is σ = 2107812114416. Its totient is φ = 1053906057204.

The previous prime is 1580859085807. The next prime is 1580859085891. The reversal of 1580859085809 is 9085809580851.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1580859085809 - 2¹ = 1580859085807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1580859085809.

It is not an unprimeable number, because it can be changed into a prime (1580859085807) 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 3 ways as a sum of consecutive naturals, for example, 263476514299 + ... + 263476514304.

It is an arithmetic number, because the mean of its divisors is an integer number (526953028604).

Almost surely, 2^{1580859085809} is an apocalyptic number.

It is an amenable number.

1580859085809 is a deficient number, since it is larger than the sum of its proper divisors (526953028607).

1580859085809 is an equidigital number, since it uses as much as digits as its factorization.

1580859085809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526953028606.

The product of its (nonzero) digits is 41472000, while the sum is 66.

The spelling of 1580859085809 in words is "one trillion, five hundred eighty billion, eight hundred fifty-nine million, eighty-five thousand, eight hundred nine".