13388535049 has 2 divisors, whose sum is σ = 13388535050. Its totient is φ = 13388535048.

The previous prime is 13388535023. The next prime is 13388535071. The reversal of 13388535049 is 94053588331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9968624649 + 3419910400 = 99843^2 + 58480^2 .

It is a cyclic number.

It is not a de Polignac number, because 13388535049 - 2¹³ = 13388526857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13388534993 and 13388535011.

It is not a weakly prime, because it can be changed into another prime (13388530049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6694267524 + 6694267525.

It is an arithmetic number, because the mean of its divisors is an integer number (6694267525).

Almost surely, 2^13388535049 is an apocalyptic number.

It is an amenable number.

13388535049 is a deficient number, since it is larger than the sum of its proper divisors (1).

13388535049 is an equidigital number, since it uses as much as digits as its factorization.

13388535049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1555200, while the sum is 49.

The spelling of 13388535049 in words is "thirteen billion, three hundred eighty-eight million, five hundred thirty-five thousand, forty-nine".