135512342200521 has 144 divisors (see below), whose sum is σ = 234445251733056. Its totient is φ = 74916563040000.

The previous prime is 135512342200481. The next prime is 135512342200523. The reversal of 135512342200521 is 125002243215531.

135512342200521 is a `hidden beast` number, since 1 + 3 + 5 + 5 + 123 + 4 + 2 + 2 + 0 + 0 + 521 = 666.

It is not a de Polignac number, because 135512342200521 - 2⁷ = 135512342200393 is a prime.

It is a super-2 number, since 2×135512342200521² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135512342200523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 747724606 + ... + 747905816.

It is an arithmetic number, because the mean of its divisors is an integer number (1628092025924).

Almost surely, 2^{135512342200521} is an apocalyptic number.

135512342200521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

135512342200521 is a deficient number, since it is larger than the sum of its proper divisors (98932909532535).

135512342200521 is a wasteful number, since it uses less digits than its factorization.

135512342200521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181876 (or 181862 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 135512342200521 in words is "one hundred thirty-five trillion, five hundred twelve billion, three hundred forty-two million, two hundred thousand, five hundred twenty-one".