6943780801 has 4 divisors (see below), whose sum is σ = 7021800900. Its totient is φ = 6865760704.

The previous prime is 6943780777. The next prime is 6943780807. The reversal of 6943780801 is 1080873496.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1563411600 + 5380369201 = 39540^2 + 73351^2 .

It is a cyclic number.

It is not a de Polignac number, because 6943780801 - 2⁷ = 6943780673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6943780807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39009916 + ... + 39010093.

It is an arithmetic number, because the mean of its divisors is an integer number (1755450225).

Almost surely, 2^6943780801 is an apocalyptic number.

It is an amenable number.

6943780801 is a deficient number, since it is larger than the sum of its proper divisors (78020099).

6943780801 is an equidigital number, since it uses as much as digits as its factorization.

6943780801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78020098.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 6943780801 is about 83329.3513775308. The cubic root of 6943780801 is about 1907.7962944179.

The spelling of 6943780801 in words is "six billion, nine hundred forty-three million, seven hundred eighty thousand, eight hundred one".