11665001015 has 16 divisors (see below), whose sum is σ = 14085298656. Its totient is φ = 9273936000.

The previous prime is 11665000981. The next prime is 11665001053. The reversal of 11665001015 is 51010056611.

It is not a de Polignac number, because 11665001015 - 2²⁰ = 11663952439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 731669 + ... + 747441.

It is an arithmetic number, because the mean of its divisors is an integer number (880331166).

Almost surely, 2^11665001015 is an apocalyptic number.

11665001015 is a deficient number, since it is larger than the sum of its proper divisors (2420297641).

11665001015 is a wasteful number, since it uses less digits than its factorization.

11665001015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16690.

The product of its (nonzero) digits is 900, while the sum is 26.

Adding to 11665001015 its reverse (51010056611), we get a palindrome (62675057626).

The spelling of 11665001015 in words is "eleven billion, six hundred sixty-five million, one thousand, fifteen".