6543072472997 has 2 divisors, whose sum is σ = 6543072472998. Its totient is φ = 6543072472996.

The previous prime is 6543072472949. The next prime is 6543072473057. The reversal of 6543072472997 is 7992742703456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5347813501156 + 1195258971841 = 2312534^2 + 1093279^2 .

It is a cyclic number.

It is not a de Polignac number, because 6543072472997 - 2¹² = 6543072468901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6543072472397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3271536236498 + 3271536236499.

It is an arithmetic number, because the mean of its divisors is an integer number (3271536236499).

Almost surely, 2^{6543072472997} is an apocalyptic number.

It is an amenable number.

6543072472997 is a deficient number, since it is larger than the sum of its proper divisors (1).

6543072472997 is an equidigital number, since it uses as much as digits as its factorization.

6543072472997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160030080, while the sum is 65.

The spelling of 6543072472997 in words is "six trillion, five hundred forty-three billion, seventy-two million, four hundred seventy-two thousand, nine hundred ninety-seven".