6973256009 has 2 divisors, whose sum is σ = 6973256010. Its totient is φ = 6973256008.

The previous prime is 6973255981. The next prime is 6973256011. The reversal of 6973256009 is 9006523796.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6972250000 + 1006009 = 83500^2 + 1003^2 .

It is a cyclic number.

It is not a de Polignac number, because 6973256009 - 2⁸ = 6973255753 is a prime.

Together with 6973256011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6973256029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3486628004 + 3486628005.

It is an arithmetic number, because the mean of its divisors is an integer number (3486628005).

Almost surely, 2^6973256009 is an apocalyptic number.

It is an amenable number.

6973256009 is a deficient number, since it is larger than the sum of its proper divisors (1).

6973256009 is an equidigital number, since it uses as much as digits as its factorization.

6973256009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 612360, while the sum is 47.

The square root of 6973256009 is about 83506.0237887064. The cubic root of 6973256009 is about 1910.4919110729.

The spelling of 6973256009 in words is "six billion, nine hundred seventy-three million, two hundred fifty-six thousand, nine".