6718333261 has 2 divisors, whose sum is σ = 6718333262. Its totient is φ = 6718333260.

The previous prime is 6718333249. The next prime is 6718333283. The reversal of 6718333261 is 1623338176.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4238791236 + 2479542025 = 65106^2 + 49795^2 .

It is a cyclic number.

It is not a de Polignac number, because 6718333261 - 2²⁷ = 6584115533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6718333561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3359166630 + 3359166631.

It is an arithmetic number, because the mean of its divisors is an integer number (3359166631).

Almost surely, 2^6718333261 is an apocalyptic number.

It is an amenable number.

6718333261 is a deficient number, since it is larger than the sum of its proper divisors (1).

6718333261 is an equidigital number, since it uses as much as digits as its factorization.

6718333261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 40.

The square root of 6718333261 is about 81965.4394302867. The cubic root of 6718333261 is about 1886.9215640566.

The spelling of 6718333261 in words is "six billion, seven hundred eighteen million, three hundred thirty-three thousand, two hundred sixty-one".