135135153142521 has 16 divisors (see below), whose sum is σ = 206053687870464. Its totient is φ = 77170042068624.

The previous prime is 135135153142519. The next prime is 135135153142559. The reversal of 135135153142521 is 125241351531531.

It is not a de Polignac number, because 135135153142521 - 2¹ = 135135153142519 is a prime.

It is a super-2 number, since 2×135135153142521² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135135153142721) 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, 2085193551 + ... + 2085258356.

It is an arithmetic number, because the mean of its divisors is an integer number (12878355491904).

Almost surely, 2^{135135153142521} is an apocalyptic number.

It is an amenable number.

135135153142521 is a deficient number, since it is larger than the sum of its proper divisors (70918534727943).

135135153142521 is a wasteful number, since it uses less digits than its factorization.

135135153142521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4170453460.

The product of its digits is 270000, while the sum is 42.

The spelling of 135135153142521 in words is "one hundred thirty-five trillion, one hundred thirty-five billion, one hundred fifty-three million, one hundred forty-two thousand, five hundred twenty-one".