665432605135 has 16 divisors (see below), whose sum is σ = 807082172640. Its totient is φ = 526645974400.

The previous prime is 665432605133. The next prime is 665432605141. The reversal of 665432605135 is 531506234566.

It is not a de Polignac number, because 665432605135 - 2¹ = 665432605133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665432605133) 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, 84564 + ... + 1156726.

It is an arithmetic number, because the mean of its divisors is an integer number (50442635790).

Almost surely, 2^665432605135 is an apocalyptic number.

665432605135 is a deficient number, since it is larger than the sum of its proper divisors (141649567505).

665432605135 is a wasteful number, since it uses less digits than its factorization.

665432605135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073498.

The product of its (nonzero) digits is 1944000, while the sum is 46.

The spelling of 665432605135 in words is "six hundred sixty-five billion, four hundred thirty-two million, six hundred five thousand, one hundred thirty-five".