6943570091 has 2 divisors, whose sum is σ = 6943570092. Its totient is φ = 6943570090.

The previous prime is 6943570069. The next prime is 6943570163. The reversal of 6943570091 is 1900753496.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6943570091 - 2¹⁰ = 6943569067 is a prime.

It is not a weakly prime, because it can be changed into another prime (6943572091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3471785045 + 3471785046.

It is an arithmetic number, because the mean of its divisors is an integer number (3471785046).

Almost surely, 2^6943570091 is an apocalyptic number.

6943570091 is a deficient number, since it is larger than the sum of its proper divisors (1).

6943570091 is an equidigital number, since it uses as much as digits as its factorization.

6943570091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 6943570091 is about 83328.0870475256. The cubic root of 6943570091 is about 1907.7769967742.

The spelling of 6943570091 in words is "six billion, nine hundred forty-three million, five hundred seventy thousand, ninety-one".