13611005489 has 2 divisors, whose sum is σ = 13611005490. Its totient is φ = 13611005488.

The previous prime is 13611005461. The next prime is 13611005537. The reversal of 13611005489 is 98450011631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7184257600 + 6426747889 = 84760^2 + 80167^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13611005489 is a prime.

It is not a weakly prime, because it can be changed into another prime (13611004489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6805502744 + 6805502745.

It is an arithmetic number, because the mean of its divisors is an integer number (6805502745).

Almost surely, 2^13611005489 is an apocalyptic number.

It is an amenable number.

13611005489 is a deficient number, since it is larger than the sum of its proper divisors (1).

13611005489 is an equidigital number, since it uses as much as digits as its factorization.

13611005489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 38.

The spelling of 13611005489 in words is "thirteen billion, six hundred eleven million, five thousand, four hundred eighty-nine".