12773438208 has 90 divisors (see below), whose sum is σ = 38088143324. Its totient is φ = 4257805824.

The previous prime is 12773438201. The next prime is 12773438233. The reversal of 12773438208 is 80283437721.

12773438208 is a `hidden beast` number, since 1 + 2 + 7 + 7 + 3 + 438 + 208 = 666.

It is not an unprimeable number, because it can be changed into a prime (12773438201) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 287266 + ... + 328737.

Almost surely, 2^12773438208 is an apocalyptic number.

12773438208 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12773438208 is an abundant number, since it is smaller than the sum of its proper divisors (25314705116).

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

12773438208 is an frugal number, since it uses more digits than its factorization.

12773438208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616031 (or 616008 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The spelling of 12773438208 in words is "twelve billion, seven hundred seventy-three million, four hundred thirty-eight thousand, two hundred eight".