56439826289 has 64 divisors (see below), whose sum is σ = 73652447232. Its totient is φ = 41981068800.

The previous prime is 56439826259. The next prime is 56439826297. The reversal of 56439826289 is 98262893465.

It is not a de Polignac number, because 56439826289 - 2²⁴ = 56423049073 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56439826259) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 34476779 + ... + 34478415.

It is an arithmetic number, because the mean of its divisors is an integer number (1150819488).

Almost surely, 2^56439826289 is an apocalyptic number.

It is an amenable number.

56439826289 is a deficient number, since it is larger than the sum of its proper divisors (17212620943).

56439826289 is a wasteful number, since it uses less digits than its factorization.

56439826289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926.

The product of its digits is 44789760, while the sum is 62.

The spelling of 56439826289 in words is "fifty-six billion, four hundred thirty-nine million, eight hundred twenty-six thousand, two hundred eighty-nine".