135121653411 has 16 divisors (see below), whose sum is σ = 196183891200. Its totient is φ = 82397232288.

The previous prime is 135121653391. The next prime is 135121653421. The reversal of 135121653411 is 114356121531.

It is a happy number.

It is not a de Polignac number, because 135121653411 - 2¹¹ = 135121651363 is a prime.

It is a super-2 number, since 2×135121653411² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135121653421) 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, 40869991 + ... + 40873296.

It is an arithmetic number, because the mean of its divisors is an integer number (12261493200).

Almost surely, 2^135121653411 is an apocalyptic number.

135121653411 is a deficient number, since it is larger than the sum of its proper divisors (61062237789).

135121653411 is a wasteful number, since it uses less digits than its factorization.

135121653411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81743338.

The product of its digits is 10800, while the sum is 33.

Adding to 135121653411 its reverse (114356121531), we get a palindrome (249477774942).

The spelling of 135121653411 in words is "one hundred thirty-five billion, one hundred twenty-one million, six hundred fifty-three thousand, four hundred eleven".