8013781211 has 2 divisors, whose sum is σ = 8013781212. Its totient is φ = 8013781210.

The previous prime is 8013781199. The next prime is 8013781229. The reversal of 8013781211 is 1121873108.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8013781211 - 2¹⁸ = 8013519067 is a prime.

It is not a weakly prime, because it can be changed into another prime (8013781231) 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, 4006890605 + 4006890606.

It is an arithmetic number, because the mean of its divisors is an integer number (4006890606).

Almost surely, 2^8013781211 is an apocalyptic number.

8013781211 is a deficient number, since it is larger than the sum of its proper divisors (1).

8013781211 is an equidigital number, since it uses as much as digits as its factorization.

8013781211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 32.

The square root of 8013781211 is about 89519.7252620896. The cubic root of 8013781211 is about 2001.1477754298.

The spelling of 8013781211 in words is "eight billion, thirteen million, seven hundred eighty-one thousand, two hundred eleven".