135505323501 has 16 divisors (see below), whose sum is σ = 184546473984. Its totient is φ = 88409116224.

The previous prime is 135505323491. The next prime is 135505323563. The reversal of 135505323501 is 105323505531.

It is a happy number.

It is not a de Polignac number, because 135505323501 - 2⁹ = 135505322989 is a prime.

It is a super-2 number, since 2×135505323501² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135505323571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1010221 + ... + 1136466.

It is an arithmetic number, because the mean of its divisors is an integer number (11534154624).

Almost surely, 2^135505323501 is an apocalyptic number.

It is an amenable number.

135505323501 is a deficient number, since it is larger than the sum of its proper divisors (49041150483).

135505323501 is a wasteful number, since it uses less digits than its factorization.

135505323501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2147140.

The product of its (nonzero) digits is 33750, while the sum is 33.

The spelling of 135505323501 in words is "one hundred thirty-five billion, five hundred five million, three hundred twenty-three thousand, five hundred one".