135212040425441 has 4 divisors (see below), whose sum is σ = 154528046200512. Its totient is φ = 115896034650372.

The previous prime is 135212040425389. The next prime is 135212040425489. The reversal of 135212040425441 is 144524040212531.

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.

It is a cyclic number.

It is not a de Polignac number, because 135212040425441 - 2²⁶ = 135211973316577 is a prime.

It is a super-2 number, since 2×135212040425441² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135212040425395 and 135212040425404.

It is not an unprimeable number, because it can be changed into a prime (135212040025441) 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, 9658002887525 + ... + 9658002887538.

It is an arithmetic number, because the mean of its divisors is an integer number (38632011550128).

Almost surely, 2^{135212040425441} is an apocalyptic number.

It is an amenable number.

135212040425441 is a deficient number, since it is larger than the sum of its proper divisors (19316005775071).

135212040425441 is an equidigital number, since it uses as much as digits as its factorization.

135212040425441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19316005775070.

The product of its (nonzero) digits is 153600, while the sum is 38.

Adding to 135212040425441 its reverse (144524040212531), we get a palindrome (279736080637972).

The spelling of 135212040425441 in words is "one hundred thirty-five trillion, two hundred twelve billion, forty million, four hundred twenty-five thousand, four hundred forty-one".