7105164821 has 2 divisors, whose sum is σ = 7105164822. Its totient is φ = 7105164820.

The previous prime is 7105164811. The next prime is 7105164851. The reversal of 7105164821 is 1284615017.

7105164821 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5955208900 + 1149955921 = 77170^2 + 33911^2 .

It is a cyclic number.

It is not a de Polignac number, because 7105164821 - 2¹⁸ = 7104902677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7105164811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3552582410 + 3552582411.

It is an arithmetic number, because the mean of its divisors is an integer number (3552582411).

Almost surely, 2^7105164821 is an apocalyptic number.

It is an amenable number.

7105164821 is a deficient number, since it is larger than the sum of its proper divisors (1).

7105164821 is an equidigital number, since it uses as much as digits as its factorization.

7105164821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 7105164821 is about 84292.1397343786. The cubic root of 7105164821 is about 1922.4632754586.

Adding to 7105164821 its reverse (1284615017), we get a palindrome (8389779838).

The spelling of 7105164821 in words is "seven billion, one hundred five million, one hundred sixty-four thousand, eight hundred twenty-one".