6397043782993 has 16 divisors (see below), whose sum is σ = 6815029810176. Its totient is φ = 5991611883840.

The previous prime is 6397043782973. The next prime is 6397043783003. The reversal of 6397043782993 is 3992873407936.

It is a cyclic number.

It is not a de Polignac number, because 6397043782993 - 2²¹ = 6397041685841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6397043782903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9910330 + ... + 10536067.

It is an arithmetic number, because the mean of its divisors is an integer number (425939363136).

Almost surely, 2^{6397043782993} is an apocalyptic number.

It is an amenable number.

6397043782993 is a deficient number, since it is larger than the sum of its proper divisors (417986027183).

6397043782993 is a wasteful number, since it uses less digits than its factorization.

6397043782993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20446704.

The product of its (nonzero) digits is 370355328, while the sum is 70.

The spelling of 6397043782993 in words is "six trillion, three hundred ninety-seven billion, forty-three million, seven hundred eighty-two thousand, nine hundred ninety-three".