11665434514071 has 32 divisors (see below), whose sum is σ = 16785060606720. Its totient is φ = 7163866854144.

The previous prime is 11665434514067. The next prime is 11665434514087. The reversal of 11665434514071 is 17041543456611.

It is not a de Polignac number, because 11665434514071 - 2² = 11665434514067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11665434514071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11665434514771) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90793051 + ... + 90921443.

It is an arithmetic number, because the mean of its divisors is an integer number (524533143960).

Almost surely, 2^{11665434514071} is an apocalyptic number.

11665434514071 is a deficient number, since it is larger than the sum of its proper divisors (5119626092649).

11665434514071 is a wasteful number, since it uses less digits than its factorization.

11665434514071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133215.

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 11665434514071 in words is "eleven trillion, six hundred sixty-five billion, four hundred thirty-four million, five hundred fourteen thousand, seventy-one".