12800001770 has 16 divisors (see below), whose sum is σ = 23355621000. Its totient is φ = 5049863424.

The previous prime is 12800001749. The next prime is 12800001779. The reversal of 12800001770 is 7710000821.

It can be written as a sum of positive squares in 4 ways, for example, as 9935504329 + 2864497441 = 99677^2 + 53521^2 .

It is not an unprimeable number, because it can be changed into a prime (12800001779) 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, 8766395 + ... + 8767854.

Almost surely, 2^12800001770 is an apocalyptic number.

12800001770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12800001770 is a deficient number, since it is larger than the sum of its proper divisors (10555619230).

12800001770 is a wasteful number, since it uses less digits than its factorization.

12800001770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17534329.

The product of its (nonzero) digits is 784, while the sum is 26.

The spelling of 12800001770 in words is "twelve billion, eight hundred million, one thousand, seven hundred seventy".