6747771109 has 2 divisors, whose sum is σ = 6747771110. Its totient is φ = 6747771108.

The previous prime is 6747771097. The next prime is 6747771143. The reversal of 6747771109 is 9011777476.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5177234209 + 1570536900 = 71953^2 + 39630^2 .

It is a cyclic number.

It is not a de Polignac number, because 6747771109 - 2⁵ = 6747771077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6747771179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3373885554 + 3373885555.

It is an arithmetic number, because the mean of its divisors is an integer number (3373885555).

Almost surely, 2^6747771109 is an apocalyptic number.

It is an amenable number.

6747771109 is a deficient number, since it is larger than the sum of its proper divisors (1).

6747771109 is an equidigital number, since it uses as much as digits as its factorization.

6747771109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 518616, while the sum is 49.

The square root of 6747771109 is about 82144.8179071571. The cubic root of 6747771109 is about 1889.6735351502.

The spelling of 6747771109 in words is "six billion, seven hundred forty-seven million, seven hundred seventy-one thousand, one hundred nine".