13648066493 has 2 divisors, whose sum is σ = 13648066494. Its totient is φ = 13648066492.

The previous prime is 13648066489. The next prime is 13648066547. The reversal of 13648066493 is 39466084631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13069519684 + 578546809 = 114322^2 + 24053^2 .

It is a cyclic number.

It is not a de Polignac number, because 13648066493 - 2² = 13648066489 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13648066423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6824033246 + 6824033247.

It is an arithmetic number, because the mean of its divisors is an integer number (6824033247).

Almost surely, 2^13648066493 is an apocalyptic number.

It is an amenable number.

13648066493 is a deficient number, since it is larger than the sum of its proper divisors (1).

13648066493 is an equidigital number, since it uses as much as digits as its factorization.

13648066493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2239488, while the sum is 50.

The spelling of 13648066493 in words is "thirteen billion, six hundred forty-eight million, sixty-six thousand, four hundred ninety-three".