11806708513 has 2 divisors, whose sum is σ = 11806708514. Its totient is φ = 11806708512.

The previous prime is 11806708489. The next prime is 11806708561. The reversal of 11806708513 is 31580760811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9882745744 + 1923962769 = 99412^2 + 43863^2 .

It is a cyclic number.

It is not a de Polignac number, because 11806708513 - 2⁵ = 11806708481 is a prime.

It is not a weakly prime, because it can be changed into another prime (11806708313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5903354256 + 5903354257.

It is an arithmetic number, because the mean of its divisors is an integer number (5903354257).

Almost surely, 2^11806708513 is an apocalyptic number.

It is an amenable number.

11806708513 is a deficient number, since it is larger than the sum of its proper divisors (1).

11806708513 is an equidigital number, since it uses as much as digits as its factorization.

11806708513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 40.

The spelling of 11806708513 in words is "eleven billion, eight hundred six million, seven hundred eight thousand, five hundred thirteen".