135428373267181 has 2 divisors, whose sum is σ = 135428373267182. Its totient is φ = 135428373267180.

The previous prime is 135428373267133. The next prime is 135428373267247. The reversal of 135428373267181 is 181762373824531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97465584921156 + 37962788346025 = 9872466^2 + 6161395^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135428373267181 is a prime.

It is a super-2 number, since 2×135428373267181² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135428373267101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67714186633590 + 67714186633591.

It is an arithmetic number, because the mean of its divisors is an integer number (67714186633591).

Almost surely, 2^{135428373267181} is an apocalyptic number.

It is an amenable number.

135428373267181 is a deficient number, since it is larger than the sum of its proper divisors (1).

135428373267181 is an equidigital number, since it uses as much as digits as its factorization.

135428373267181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40642560, while the sum is 61.

The spelling of 135428373267181 in words is "one hundred thirty-five trillion, four hundred twenty-eight billion, three hundred seventy-three million, two hundred sixty-seven thousand, one hundred eighty-one".