12208537805 has 8 divisors (see below), whose sum is σ = 14704306944. Its totient is φ = 9730789200.

The previous prime is 12208537801. The next prime is 12208537823. The reversal of 12208537805 is 50873580221.

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

It is not a de Polignac number, because 12208537805 - 2² = 12208537801 is a prime.

It is a super-2 number, since 2×12208537805² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12208537801) 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 7 ways as a sum of consecutive naturals, for example, 4503641 + ... + 4506350.

It is an arithmetic number, because the mean of its divisors is an integer number (1838038368).

Almost surely, 2^12208537805 is an apocalyptic number.

It is an amenable number.

12208537805 is a deficient number, since it is larger than the sum of its proper divisors (2495769139).

12208537805 is an equidigital number, since it uses as much as digits as its factorization.

12208537805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9010267.

The product of its (nonzero) digits is 134400, while the sum is 41.

The spelling of 12208537805 in words is "twelve billion, two hundred eight million, five hundred thirty-seven thousand, eight hundred five".