11506536165 has 8 divisors (see below), whose sum is σ = 18410457888. Its totient is φ = 6136819280.

The previous prime is 11506536149. The next prime is 11506536179. The reversal of 11506536165 is 56163560511.

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

It is not a de Polignac number, because 11506536165 - 2⁴ = 11506536149 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383551191 + ... + 383551220.

It is an arithmetic number, because the mean of its divisors is an integer number (2301307236).

Almost surely, 2^11506536165 is an apocalyptic number.

11506536165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11506536165 is a deficient number, since it is larger than the sum of its proper divisors (6903921723).

11506536165 is an equidigital number, since it uses as much as digits as its factorization.

11506536165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767102419.

The product of its (nonzero) digits is 81000, while the sum is 39.

The spelling of 11506536165 in words is "eleven billion, five hundred six million, five hundred thirty-six thousand, one hundred sixty-five".