11439331645 has 32 divisors (see below), whose sum is σ = 16124433408. Its totient is φ = 7628145408.

The previous prime is 11439331597. The next prime is 11439331679. The reversal of 11439331645 is 54613393411.

It is a cyclic number.

It is not a de Polignac number, because 11439331645 - 2²⁹ = 10902460733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11439331598 and 11439331607.

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 31 ways as a sum of consecutive naturals, for example, 236119 + ... + 280411.

It is an arithmetic number, because the mean of its divisors is an integer number (503888544).

Almost surely, 2^11439331645 is an apocalyptic number.

It is an amenable number.

11439331645 is a deficient number, since it is larger than the sum of its proper divisors (4685101763).

11439331645 is a wasteful number, since it uses less digits than its factorization.

11439331645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44509.

The product of its digits is 116640, while the sum is 40.

The spelling of 11439331645 in words is "eleven billion, four hundred thirty-nine million, three hundred thirty-one thousand, six hundred forty-five".