4081777213 has 2 divisors, whose sum is σ = 4081777214. Its totient is φ = 4081777212.

The previous prime is 4081777207. The next prime is 4081777253. The reversal of 4081777213 is 3127771804.

It is an a-pointer prime, because the next prime (4081777253) can be obtained adding 4081777213 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4059856089 + 21921124 = 63717^2 + 4682^2 .

It is a cyclic number.

It is not a de Polignac number, because 4081777213 - 2¹⁷ = 4081646141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4081777253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2040888606 + 2040888607.

It is an arithmetic number, because the mean of its divisors is an integer number (2040888607).

Almost surely, 2^4081777213 is an apocalyptic number.

It is an amenable number.

4081777213 is a deficient number, since it is larger than the sum of its proper divisors (1).

4081777213 is an equidigital number, since it uses as much as digits as its factorization.

4081777213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65856, while the sum is 40.

The square root of 4081777213 is about 63888.7878504515. The cubic root of 4081777213 is about 1598.1459269475.

The spelling of 4081777213 in words is "four billion, eighty-one million, seven hundred seventy-seven thousand, two hundred thirteen".