135958246509 has 32 divisors (see below), whose sum is σ = 184596653824. Its totient is φ = 88991654400.

The previous prime is 135958246441. The next prime is 135958246517. The reversal of 135958246509 is 905642859531.

It is a happy number.

It is not a de Polignac number, because 135958246509 - 2⁷ = 135958246381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135958246519) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53294784 + ... + 53297334.

It is an arithmetic number, because the mean of its divisors is an integer number (5768645432).

Almost surely, 2^135958246509 is an apocalyptic number.

It is an amenable number.

135958246509 is a deficient number, since it is larger than the sum of its proper divisors (48638407315).

135958246509 is a wasteful number, since it uses less digits than its factorization.

135958246509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3637.

The product of its (nonzero) digits is 11664000, while the sum is 57.

The spelling of 135958246509 in words is "one hundred thirty-five billion, nine hundred fifty-eight million, two hundred forty-six thousand, five hundred nine".