135800543321 has 2 divisors, whose sum is σ = 135800543322. Its totient is φ = 135800543320.

The previous prime is 135800543311. The next prime is 135800543371. The reversal of 135800543321 is 123345008531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106785168400 + 29015374921 = 326780^2 + 170339^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135800543321 is a prime.

It is a super-3 number, since 3×135800543321³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (135800543311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67900271660 + 67900271661.

It is an arithmetic number, because the mean of its divisors is an integer number (67900271661).

Almost surely, 2^135800543321 is an apocalyptic number.

It is an amenable number.

135800543321 is a deficient number, since it is larger than the sum of its proper divisors (1).

135800543321 is an equidigital number, since it uses as much as digits as its factorization.

135800543321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 135800543321 in words is "one hundred thirty-five billion, eight hundred million, five hundred forty-three thousand, three hundred twenty-one".