56126513526389 has 2 divisors, whose sum is σ = 56126513526390. Its totient is φ = 56126513526388.

The previous prime is 56126513526367. The next prime is 56126513526439. The reversal of 56126513526389 is 98362531562165.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45273277445764 + 10853236080625 = 6728542^2 + 3294425^2 .

It is a cyclic number.

It is not a de Polignac number, because 56126513526389 - 2⁴⁰ = 55027001898613 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56126513526329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28063256763194 + 28063256763195.

It is an arithmetic number, because the mean of its divisors is an integer number (28063256763195).

Almost surely, 2^{56126513526389} is an apocalyptic number.

It is an amenable number.

56126513526389 is a deficient number, since it is larger than the sum of its proper divisors (1).

56126513526389 is an equidigital number, since it uses as much as digits as its factorization.

56126513526389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984000, while the sum is 62.

The spelling of 56126513526389 in words is "fifty-six trillion, one hundred twenty-six billion, five hundred thirteen million, five hundred twenty-six thousand, three hundred eighty-nine".