136340537085 has 24 divisors (see below), whose sum is σ = 237176773080. Its totient is φ = 72452437632.

The previous prime is 136340536987. The next prime is 136340537087. The reversal of 136340537085 is 580735043631.

136340537085 is a `hidden beast` number, since 1 + 3 + 6 + 34 + 0 + 537 + 0 + 85 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5784058809 + 130556478276 = 76053^2 + 361326^2 .

It is not a de Polignac number, because 136340537085 - 2¹³ = 136340528893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 136340537085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136340537087) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5456470 + ... + 5481399.

It is an arithmetic number, because the mean of its divisors is an integer number (9882365545).

Almost surely, 2^136340537085 is an apocalyptic number.

136340537085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

136340537085 is a deficient number, since it is larger than the sum of its proper divisors (100836235995).

136340537085 is a wasteful number, since it uses less digits than its factorization.

136340537085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10938157 (or 10938154 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 136340537085 in words is "one hundred thirty-six billion, three hundred forty million, five hundred thirty-seven thousand, eighty-five".