135609991350847 has 16 divisors (see below), whose sum is σ = 146470337610912. Its totient is φ = 124810942561920.

The previous prime is 135609991350803. The next prime is 135609991350871. The reversal of 135609991350847 is 748053199906531.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 135609991350847 - 2⁴³ = 126813898328639 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 (135609991350887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83374293 + ... + 84985249.

It is an arithmetic number, because the mean of its divisors is an integer number (9154396100682).

Almost surely, 2^{135609991350847} is an apocalyptic number.

135609991350847 is a deficient number, since it is larger than the sum of its proper divisors (10860346260065).

135609991350847 is a wasteful number, since it uses less digits than its factorization.

135609991350847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1629978.

The product of its (nonzero) digits is 220449600, while the sum is 70.

The spelling of 135609991350847 in words is "one hundred thirty-five trillion, six hundred nine billion, nine hundred ninety-one million, three hundred fifty thousand, eight hundred forty-seven".