11944924665 has 64 divisors (see below), whose sum is σ = 19749574656. Its totient is φ = 6162642432.

The previous prime is 11944924639. The next prime is 11944924669. The reversal of 11944924665 is 56642944911.

It is a happy number.

It is not a de Polignac number, because 11944924665 - 2⁹ = 11944924153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11944924669) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15177402 + ... + 15178188.

It is an arithmetic number, because the mean of its divisors is an integer number (308587104).

Almost surely, 2^11944924665 is an apocalyptic number.

11944924665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11944924665 is a deficient number, since it is larger than the sum of its proper divisors (7804649991).

11944924665 is a wasteful number, since it uses less digits than its factorization.

11944924665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118.

The product of its digits is 1866240, while the sum is 51.

The spelling of 11944924665 in words is "eleven billion, nine hundred forty-four million, nine hundred twenty-four thousand, six hundred sixty-five".