135263231423405 has 32 divisors (see below), whose sum is σ = 175577385784320. Its totient is φ = 99646058352640.

The previous prime is 135263231423381. The next prime is 135263231423459. The reversal of 135263231423405 is 504324132362531.

It is not a de Polignac number, because 135263231423405 - 2¹⁰ = 135263231422381 is a prime.

It is a super-2 number, since 2×135263231423405² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6860120 + ... + 17820990.

It is an arithmetic number, because the mean of its divisors is an integer number (5486793305760).

Almost surely, 2^{135263231423405} is an apocalyptic number.

It is an amenable number.

135263231423405 is a deficient number, since it is larger than the sum of its proper divisors (40314154360915).

135263231423405 is a wasteful number, since it uses less digits than its factorization.

135263231423405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10964029.

The product of its (nonzero) digits is 1555200, while the sum is 44.

Adding to 135263231423405 its reverse (504324132362531), we get a palindrome (639587363785936).

The spelling of 135263231423405 in words is "one hundred thirty-five trillion, two hundred sixty-three billion, two hundred thirty-one million, four hundred twenty-three thousand, four hundred five".