6765432109 has 2 divisors, whose sum is σ = 6765432110. Its totient is φ = 6765432108.

The previous prime is 6765432101. The next prime is 6765432161. The reversal of 6765432109 is 9012345676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4355604009 + 2409828100 = 65997^2 + 49090^2 .

It is a cyclic number.

It is not a de Polignac number, because 6765432109 - 2³ = 6765432101 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6765432101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3382716054 + 3382716055.

It is an arithmetic number, because the mean of its divisors is an integer number (3382716055).

Almost surely, 2^6765432109 is an apocalyptic number.

It is an amenable number.

6765432109 is a deficient number, since it is larger than the sum of its proper divisors (1).

6765432109 is an equidigital number, since it uses as much as digits as its factorization.

6765432109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 6765432109 is about 82252.2468325334. The cubic root of 6765432109 is about 1891.3207185810.

The spelling of 6765432109 in words is "six billion, seven hundred sixty-five million, four hundred thirty-two thousand, one hundred nine".