11415321665 has 16 divisors (see below), whose sum is σ = 14957395200. Its totient is φ = 8294440320.

The previous prime is 11415321647. The next prime is 11415321677. The reversal of 11415321665 is 56612351411.

11415321665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11415321665 - 2⁸ = 11415321409 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34265 + ... + 154934.

It is an arithmetic number, because the mean of its divisors is an integer number (934837200).

Almost surely, 2^11415321665 is an apocalyptic number.

It is an amenable number.

11415321665 is a deficient number, since it is larger than the sum of its proper divisors (3542073535).

11415321665 is a wasteful number, since it uses less digits than its factorization.

11415321665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190312.

The product of its digits is 21600, while the sum is 35.

The spelling of 11415321665 in words is "eleven billion, four hundred fifteen million, three hundred twenty-one thousand, six hundred sixty-five".