136540811 has 8 divisors (see below), whose sum is σ = 155430144. Its totient is φ = 118730920.

The previous prime is 136540793. The next prime is 136540819. The reversal of 136540811 is 118045631.

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

It is a de Polignac number, because none of the positive numbers 2^k-136540811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136540819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269591 + ... + 270096.

It is an arithmetic number, because the mean of its divisors is an integer number (19428768).

Almost surely, 2^136540811 is an apocalyptic number.

136540811 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

136540811 is a deficient number, since it is larger than the sum of its proper divisors (18889333).

136540811 is a wasteful number, since it uses less digits than its factorization.

136540811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539721.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 136540811 is about 11685.0678645868. The cubic root of 136540811 is about 514.9370721490.

The spelling of 136540811 in words is "one hundred thirty-six million, five hundred forty thousand, eight hundred eleven".