665465115511 has 8 divisors (see below), whose sum is σ = 761577689600. Its totient is φ = 569614073688.

The previous prime is 665465115467. The next prime is 665465115541. The reversal of 665465115511 is 115511564566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 665465115511 - 2¹¹ = 665465113463 is a prime.

It is a super-2 number, since 2×665465115511² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665465115541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65377611 + ... + 65387788.

It is an arithmetic number, because the mean of its divisors is an integer number (95197211200).

Almost surely, 2^665465115511 is an apocalyptic number.

665465115511 is a deficient number, since it is larger than the sum of its proper divisors (96112574089).

665465115511 is a wasteful number, since it uses less digits than its factorization.

665465115511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130766133.

The product of its digits is 540000, while the sum is 46.

The spelling of 665465115511 in words is "six hundred sixty-five billion, four hundred sixty-five million, one hundred fifteen thousand, five hundred eleven".