6605435123511 has 96 divisors (see below), whose sum is σ = 11054908159488. Its totient is φ = 3489426420480.

The previous prime is 6605435123473. The next prime is 6605435123513. The reversal of 6605435123511 is 1153215345066.

It is a happy number.

It is not a de Polignac number, because 6605435123511 - 2¹⁴ = 6605435107127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6605435123513) 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 95 ways as a sum of consecutive naturals, for example, 11730841 + ... + 12281021.

It is an arithmetic number, because the mean of its divisors is an integer number (115155293328).

Almost surely, 2^{6605435123511} is an apocalyptic number.

6605435123511 is a deficient number, since it is larger than the sum of its proper divisors (4449473035977).

6605435123511 is a wasteful number, since it uses less digits than its factorization.

6605435123511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550341 (or 550334 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 42.

It can be divided in two parts, 6605435 and 123511, that added together give a triangular number (6728946 = T₃₆₆₈).

The spelling of 6605435123511 in words is "six trillion, six hundred five billion, four hundred thirty-five million, one hundred twenty-three thousand, five hundred eleven".