11286642865 has 32 divisors (see below), whose sum is σ = 14380629120. Its totient is φ = 8480070144.

The previous prime is 11286642853. The next prime is 11286642923. The reversal of 11286642865 is 56824668211.

It is a cyclic number.

It is not a de Polignac number, because 11286642865 - 2¹⁷ = 11286511793 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12781714 + ... + 12782596.

It is an arithmetic number, because the mean of its divisors is an integer number (449394660).

Almost surely, 2^11286642865 is an apocalyptic number.

It is an amenable number.

11286642865 is a deficient number, since it is larger than the sum of its proper divisors (3093986255).

11286642865 is a wasteful number, since it uses less digits than its factorization.

11286642865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921.

The product of its digits is 1105920, while the sum is 49.

The spelling of 11286642865 in words is "eleven billion, two hundred eighty-six million, six hundred forty-two thousand, eight hundred sixty-five".