6468143497 has 4 divisors (see below), whose sum is σ = 6476139540. Its totient is φ = 6460147456.

The previous prime is 6468143453. The next prime is 6468143503. The reversal of 6468143497 is 7943418646.

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 3369105936 + 3099037561 = 58044^2 + 55669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6468143497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6468143417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3996808 + ... + 3998425.

It is an arithmetic number, because the mean of its divisors is an integer number (1619034885).

Almost surely, 2^6468143497 is an apocalyptic number.

It is an amenable number.

6468143497 is a deficient number, since it is larger than the sum of its proper divisors (7996043).

6468143497 is an equidigital number, since it uses as much as digits as its factorization.

6468143497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7996042.

The product of its digits is 3483648, while the sum is 52.

The square root of 6468143497 is about 80424.7691759199. The cubic root of 6468143497 is about 1863.2017441971.

The spelling of 6468143497 in words is "six billion, four hundred sixty-eight million, one hundred forty-three thousand, four hundred ninety-seven".