11806714921 has 2 divisors, whose sum is σ = 11806714922. Its totient is φ = 11806714920.

The previous prime is 11806714877. The next prime is 11806714973. The reversal of 11806714921 is 12941760811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9319199296 + 2487515625 = 96536^2 + 49875^2 .

It is a cyclic number.

It is not a de Polignac number, because 11806714921 - 2⁷ = 11806714793 is a prime.

It is not a weakly prime, because it can be changed into another prime (11846714921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5903357460 + 5903357461.

It is an arithmetic number, because the mean of its divisors is an integer number (5903357461).

Almost surely, 2^11806714921 is an apocalyptic number.

It is an amenable number.

11806714921 is a deficient number, since it is larger than the sum of its proper divisors (1).

11806714921 is an equidigital number, since it uses as much as digits as its factorization.

11806714921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 40.

The spelling of 11806714921 in words is "eleven billion, eight hundred six million, seven hundred fourteen thousand, nine hundred twenty-one".