135890597539 has 2 divisors, whose sum is σ = 135890597540. Its totient is φ = 135890597538.

The previous prime is 135890597519. The next prime is 135890597587. The reversal of 135890597539 is 935795098531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135890597539 - 2³¹ = 133743113891 is a prime.

It is a super-4 number, since 4×135890597539⁴ (a number of 46 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (135890597519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67945298769 + 67945298770.

It is an arithmetic number, because the mean of its divisors is an integer number (67945298770).

Almost surely, 2^135890597539 is an apocalyptic number.

135890597539 is a deficient number, since it is larger than the sum of its proper divisors (1).

135890597539 is an equidigital number, since it uses as much as digits as its factorization.

135890597539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45927000, while the sum is 64.

The spelling of 135890597539 in words is "one hundred thirty-five billion, eight hundred ninety million, five hundred ninety-seven thousand, five hundred thirty-nine".