135678656047785 has 16 divisors (see below), whose sum is σ = 219077462978880. Its totient is φ = 71698078791360.

The previous prime is 135678656047763. The next prime is 135678656047787. The reversal of 135678656047785 is 587740656876531.

It is not a de Polignac number, because 135678656047785 - 2¹⁰ = 135678656046761 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135678656047785.

It is not an unprimeable number, because it can be changed into a prime (135678656047787) 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, 41491942111 + ... + 41491945380.

It is an arithmetic number, because the mean of its divisors is an integer number (13692341436180).

Almost surely, 2^{135678656047785} is an apocalyptic number.

135678656047785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135678656047785 is a deficient number, since it is larger than the sum of its proper divisors (83398806931095).

135678656047785 is a wasteful number, since it uses less digits than its factorization.

135678656047785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82983887608.

The product of its (nonzero) digits is 7112448000, while the sum is 78.

The spelling of 135678656047785 in words is "one hundred thirty-five trillion, six hundred seventy-eight billion, six hundred fifty-six million, forty-seven thousand, seven hundred eighty-five".