12800449684 has 24 divisors (see below), whose sum is σ = 24452620416. Its totient is φ = 5814720000.

The previous prime is 12800449681. The next prime is 12800449691. The reversal of 12800449684 is 48694400821.

It is a super-2 number, since 2×12800449684² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12800449681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20412 + ... + 161299.

It is an arithmetic number, because the mean of its divisors is an integer number (1018859184).

Almost surely, 2^12800449684 is an apocalyptic number.

It is an amenable number.

12800449684 is a deficient number, since it is larger than the sum of its proper divisors (11652170732).

12800449684 is a wasteful number, since it uses less digits than its factorization.

12800449684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183327 (or 183325 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 46.

The spelling of 12800449684 in words is "twelve billion, eight hundred million, four hundred forty-nine thousand, six hundred eighty-four".