135412736161 has 2 divisors, whose sum is σ = 135412736162. Its totient is φ = 135412736160.

The previous prime is 135412736153. The next prime is 135412736171. The reversal of 135412736161 is 161637214531.

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., 134791779600 + 620956561 = 367140^2 + 24919^2 .

It is a cyclic number.

It is not a de Polignac number, because 135412736161 - 2³ = 135412736153 is a prime.

It is a super-2 number, since 2×135412736161² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (135412736171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67706368080 + 67706368081.

It is an arithmetic number, because the mean of its divisors is an integer number (67706368081).

Almost surely, 2^135412736161 is an apocalyptic number.

It is an amenable number.

135412736161 is a deficient number, since it is larger than the sum of its proper divisors (1).

135412736161 is an equidigital number, since it uses as much as digits as its factorization.

135412736161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The spelling of 135412736161 in words is "one hundred thirty-five billion, four hundred twelve million, seven hundred thirty-six thousand, one hundred sixty-one".