2209819857606 has 48 divisors (see below), whose sum is σ = 4791933553680. Its totient is φ = 735992974080.

The previous prime is 2209819857601. The next prime is 2209819857671. The reversal of 2209819857606 is 6067589189022.

2209819857606 is a `hidden beast` number, since 2 + 2 + 0 + 9 + 8 + 19 + 8 + 5 + 7 + 606 = 666.

It is a super-3 number, since 3×2209819857606³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2209819857601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 120660306 + ... + 120678618.

It is an arithmetic number, because the mean of its divisors is an integer number (99831949035).

Almost surely, 2^{2209819857606} is an apocalyptic number.

2209819857606 is an abundant number, since it is smaller than the sum of its proper divisors (2582113696074).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2209819857606 is a wasteful number, since it uses less digits than its factorization.

2209819857606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23541 (or 23538 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 63.

The spelling of 2209819857606 in words is "two trillion, two hundred nine billion, eight hundred nineteen million, eight hundred fifty-seven thousand, six hundred six".