13132779449 has 2 divisors, whose sum is σ = 13132779450. Its totient is φ = 13132779448.

The previous prime is 13132779403. The next prime is 13132779467. The reversal of 13132779449 is 94497723131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13062889849 + 69889600 = 114293^2 + 8360^2 .

It is a cyclic number.

It is not a de Polignac number, because 13132779449 - 2¹² = 13132775353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13132779397 and 13132779406.

It is not a weakly prime, because it can be changed into another prime (13132779469) 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 as a sum of consecutive naturals, namely, 6566389724 + 6566389725.

It is an arithmetic number, because the mean of its divisors is an integer number (6566389725).

Almost surely, 2^13132779449 is an apocalyptic number.

It is an amenable number.

13132779449 is a deficient number, since it is larger than the sum of its proper divisors (1).

13132779449 is an equidigital number, since it uses as much as digits as its factorization.

13132779449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 50.

The spelling of 13132779449 in words is "thirteen billion, one hundred thirty-two million, seven hundred seventy-nine thousand, four hundred forty-nine".