12447784793 has 2 divisors, whose sum is σ = 12447784794. Its totient is φ = 12447784792.

The previous prime is 12447784757. The next prime is 12447784799. The reversal of 12447784793 is 39748774421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11662272064 + 785512729 = 107992^2 + 28027^2 .

It is a cyclic number.

It is not a de Polignac number, because 12447784793 - 2⁶ = 12447784729 is a prime.

It is not a weakly prime, because it can be changed into another prime (12447784799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6223892396 + 6223892397.

It is an arithmetic number, because the mean of its divisors is an integer number (6223892397).

Almost surely, 2^12447784793 is an apocalyptic number.

It is an amenable number.

12447784793 is a deficient number, since it is larger than the sum of its proper divisors (1).

12447784793 is an equidigital number, since it uses as much as digits as its factorization.

12447784793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9483264, while the sum is 56.

The spelling of 12447784793 in words is "twelve billion, four hundred forty-seven million, seven hundred eighty-four thousand, seven hundred ninety-three".