135819074185 has 8 divisors (see below), whose sum is σ = 172570117896. Its totient is φ = 102263773440.

The previous prime is 135819074161. The next prime is 135819074191. The reversal of 135819074185 is 581470918531.

It can be written as a sum of positive squares in 4 ways, for example, as 57875368329 + 77943705856 = 240573^2 + 279184^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135819074185 - 2⁷ = 135819074057 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 798935646 + ... + 798935815.

It is an arithmetic number, because the mean of its divisors is an integer number (21571264737).

Almost surely, 2^135819074185 is an apocalyptic number.

It is an amenable number.

135819074185 is a deficient number, since it is larger than the sum of its proper divisors (36751043711).

135819074185 is a wasteful number, since it uses less digits than its factorization.

135819074185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597871483.

The product of its (nonzero) digits is 1209600, while the sum is 52.

The spelling of 135819074185 in words is "one hundred thirty-five billion, eight hundred nineteen million, seventy-four thousand, one hundred eighty-five".