13334511649 has 2 divisors, whose sum is σ = 13334511650. Its totient is φ = 13334511648.

The previous prime is 13334511623. The next prime is 13334511667. The reversal of 13334511649 is 94611543331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8013830400 + 5320681249 = 89520^2 + 72943^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13334511649 is a prime.

It is not a weakly prime, because it can be changed into another prime (13334551649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6667255824 + 6667255825.

It is an arithmetic number, because the mean of its divisors is an integer number (6667255825).

Almost surely, 2^13334511649 is an apocalyptic number.

It is an amenable number.

13334511649 is a deficient number, since it is larger than the sum of its proper divisors (1).

13334511649 is an equidigital number, since it uses as much as digits as its factorization.

13334511649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 40.

The spelling of 13334511649 in words is "thirteen billion, three hundred thirty-four million, five hundred eleven thousand, six hundred forty-nine".