56439826259 has 2 divisors, whose sum is σ = 56439826260. Its totient is φ = 56439826258.

The previous prime is 56439826241. The next prime is 56439826297. The reversal of 56439826259 is 95262893465.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56439826259 is a prime.

It is a super-2 number, since 2×56439826259² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56439826198 and 56439826207.

It is not a weakly prime, because it can be changed into another prime (56439823259) 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 as a sum of consecutive naturals, namely, 28219913129 + 28219913130.

It is an arithmetic number, because the mean of its divisors is an integer number (28219913130).

Almost surely, 2^56439826259 is an apocalyptic number.

56439826259 is a deficient number, since it is larger than the sum of its proper divisors (1).

56439826259 is an equidigital number, since it uses as much as digits as its factorization.

56439826259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27993600, while the sum is 59.

The spelling of 56439826259 in words is "fifty-six billion, four hundred thirty-nine million, eight hundred twenty-six thousand, two hundred fifty-nine".