135646759129 has 4 divisors (see below), whose sum is σ = 155024867584. Its totient is φ = 116268650676.

The previous prime is 135646759123. The next prime is 135646759139. The reversal of 135646759129 is 921957646531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 921957646531 = 317 ⋅2908383743.

It is a cyclic number.

It is not a de Polignac number, because 135646759129 - 2⁵ = 135646759097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135646759123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9689054217 + ... + 9689054230.

It is an arithmetic number, because the mean of its divisors is an integer number (38756216896).

Almost surely, 2^135646759129 is an apocalyptic number.

It is an amenable number.

135646759129 is a deficient number, since it is larger than the sum of its proper divisors (19378108455).

135646759129 is an equidigital number, since it uses as much as digits as its factorization.

135646759129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19378108454.

The product of its digits is 12247200, while the sum is 58.

The spelling of 135646759129 in words is "one hundred thirty-five billion, six hundred forty-six million, seven hundred fifty-nine thousand, one hundred twenty-nine".