12804722811 has 8 divisors (see below), whose sum is σ = 18969959760. Its totient is φ = 8536481856.

The previous prime is 12804722809. The next prime is 12804722857. The reversal of 12804722811 is 11822740821.

It is a happy number.

It is not a de Polignac number, because 12804722811 - 2¹ = 12804722809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12804722891) 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, 237124470 + ... + 237124523.

It is an arithmetic number, because the mean of its divisors is an integer number (2371244970).

Almost surely, 2^12804722811 is an apocalyptic number.

12804722811 is a deficient number, since it is larger than the sum of its proper divisors (6165236949).

12804722811 is an equidigital number, since it uses as much as digits as its factorization.

12804722811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474249002 (or 474248996 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The spelling of 12804722811 in words is "twelve billion, eight hundred four million, seven hundred twenty-two thousand, eight hundred eleven".