135839422097 has 4 divisors (see below), whose sum is σ = 143829976356. Its totient is φ = 127848867840.

The previous prime is 135839422057. The next prime is 135839422109. The reversal of 135839422097 is 790224938531.

It is a Cunningham number, because it is equal to 368564²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 790224938531 = 7 ⋅112889276933.

It can be written as a sum of positive squares in 2 ways, for example, as 105757641616 + 30081780481 = 325204^2 + 173441^2 .

It is a cyclic number.

It is not a de Polignac number, because 135839422097 - 2²⁶ = 135772313233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135839422007) 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 in 3 ways as a sum of consecutive naturals, for example, 3995277104 + ... + 3995277137.

It is an arithmetic number, because the mean of its divisors is an integer number (35957494089).

Almost surely, 2^135839422097 is an apocalyptic number.

135839422097 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

135839422097 is a deficient number, since it is larger than the sum of its proper divisors (7990554259).

135839422097 is an equidigital number, since it uses as much as digits as its factorization.

135839422097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7990554258.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 135839422097 in words is "one hundred thirty-five billion, eight hundred thirty-nine million, four hundred twenty-two thousand, ninety-seven".