142735511982809 has 2 divisors, whose sum is σ = 142735511982810. Its totient is φ = 142735511982808.

The previous prime is 142735511982781. The next prime is 142735511982851. The reversal of 142735511982809 is 908289115537241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134360438046025 + 8375073936784 = 11591395^2 + 2893972^2 .

It is an emirp because it is prime and its reverse (908289115537241) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142735511982809 is a prime.

It is a super-2 number, since 2×142735511982809² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142735511982209) 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, 71367755991404 + 71367755991405.

It is an arithmetic number, because the mean of its divisors is an integer number (71367755991405).

Almost surely, 2^{142735511982809} is an apocalyptic number.

It is an amenable number.

142735511982809 is a deficient number, since it is larger than the sum of its proper divisors (1).

142735511982809 is an equidigital number, since it uses as much as digits as its factorization.

142735511982809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43545600, while the sum is 65.

The spelling of 142735511982809 in words is "one hundred forty-two trillion, seven hundred thirty-five billion, five hundred eleven million, nine hundred eighty-two thousand, eight hundred nine".