135800246789 has 2 divisors, whose sum is σ = 135800246790. Its totient is φ = 135800246788.

The previous prime is 135800246783. The next prime is 135800246797. The reversal of 135800246789 is 987642008531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132299512900 + 3500733889 = 363730^2 + 59167^2 .

It is an emirp because it is prime and its reverse (987642008531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135800246789 - 2¹² = 135800242693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135800246789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135800246783) by changing a digit.

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 as a sum of consecutive naturals, namely, 67900123394 + 67900123395.

It is an arithmetic number, because the mean of its divisors is an integer number (67900123395).

It is a 2-persistent number, because it is pandigital, and so is 2⋅135800246789 = 271600493578, but 3⋅135800246789 = 407400740367 is not.

Almost surely, 2^135800246789 is an apocalyptic number.

It is an amenable number.

135800246789 is a deficient number, since it is larger than the sum of its proper divisors (1).

135800246789 is an equidigital number, since it uses as much as digits as its factorization.

135800246789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 135800246789 in words is "one hundred thirty-five billion, eight hundred million, two hundred forty-six thousand, seven hundred eighty-nine".