135646066513 has 2 divisors, whose sum is σ = 135646066514. Its totient is φ = 135646066512.

The previous prime is 135646066481. The next prime is 135646066553. The reversal of 135646066513 is 315660646531.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82066779729 + 53579286784 = 286473^2 + 231472^2 .

It is a cyclic number.

It is not a de Polignac number, because 135646066513 - 2⁵ = 135646066481 is a prime.

It is not a weakly prime, because it can be changed into another prime (135646066553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67823033256 + 67823033257.

It is an arithmetic number, because the mean of its divisors is an integer number (67823033257).

Almost surely, 2^135646066513 is an apocalyptic number.

It is an amenable number.

135646066513 is a deficient number, since it is larger than the sum of its proper divisors (1).

135646066513 is an equidigital number, since it uses as much as digits as its factorization.

135646066513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1166400, while the sum is 46.

The spelling of 135646066513 in words is "one hundred thirty-five billion, six hundred forty-six million, sixty-six thousand, five hundred thirteen".