6761771729 has 2 divisors, whose sum is σ = 6761771730. Its totient is φ = 6761771728.

The previous prime is 6761771693. The next prime is 6761771741. The reversal of 6761771729 is 9271771676.

6761771729 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5669337025 + 1092434704 = 75295^2 + 33052^2 .

It is a cyclic number.

It is not a de Polignac number, because 6761771729 - 2³² = 2466804433 is a prime.

It is not a weakly prime, because it can be changed into another prime (6761771749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3380885864 + 3380885865.

It is an arithmetic number, because the mean of its divisors is an integer number (3380885865).

Almost surely, 2^6761771729 is an apocalyptic number.

It is an amenable number.

6761771729 is a deficient number, since it is larger than the sum of its proper divisors (1).

6761771729 is an equidigital number, since it uses as much as digits as its factorization.

6761771729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1555848, while the sum is 53.

The square root of 6761771729 is about 82229.9928797273. The cubic root of 6761771729 is about 1890.9795626710.

Subtracting from 6761771729 its sum of digits (53), we obtain a palindrome (6761771676).

The spelling of 6761771729 in words is "six billion, seven hundred sixty-one million, seven hundred seventy-one thousand, seven hundred twenty-nine".