12800450922109 has 4 divisors (see below), whose sum is σ = 12800463389980. Its totient is φ = 12800438454240.

The previous prime is 12800450922047. The next prime is 12800450922139. The reversal of 12800450922109 is 90122905400821.

12800450922109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12244610592900 + 555840329209 = 3499230^2 + 745547^2 .

It is a cyclic number.

It is not a de Polignac number, because 12800450922109 - 2¹³ = 12800450913917 is a prime.

It is a super-2 number, since 2×12800450922109² (a number of 27 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 (12800450922139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4540602 + ... + 6798379.

It is an arithmetic number, because the mean of its divisors is an integer number (3200115847495).

Almost surely, 2^{12800450922109} is an apocalyptic number.

It is an amenable number.

12800450922109 is a deficient number, since it is larger than the sum of its proper divisors (12467871).

12800450922109 is a wasteful number, since it uses less digits than its factorization.

12800450922109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12467870.

The product of its (nonzero) digits is 103680, while the sum is 43.

The spelling of 12800450922109 in words is "twelve trillion, eight hundred billion, four hundred fifty million, nine hundred twenty-two thousand, one hundred nine".