7769881213 has 2 divisors, whose sum is σ = 7769881214. Its totient is φ = 7769881212.

The previous prime is 7769881201. The next prime is 7769881219. The reversal of 7769881213 is 3121889677.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3970638169 + 3799243044 = 63013^2 + 61638^2 .

It is a cyclic number.

It is not a de Polignac number, because 7769881213 - 2⁵ = 7769881181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7769881219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3884940606 + 3884940607.

It is an arithmetic number, because the mean of its divisors is an integer number (3884940607).

Almost surely, 2^7769881213 is an apocalyptic number.

It is an amenable number.

7769881213 is a deficient number, since it is larger than the sum of its proper divisors (1).

7769881213 is an equidigital number, since it uses as much as digits as its factorization.

7769881213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 52.

The square root of 7769881213 is about 88146.9296856107. The cubic root of 7769881213 is about 1980.6365681853.

The spelling of 7769881213 in words is "seven billion, seven hundred sixty-nine million, eight hundred eighty-one thousand, two hundred thirteen".