6497124198218 has 4 divisors (see below), whose sum is σ = 9745686297330. Its totient is φ = 3248562099108.

The previous prime is 6497124198217. The next prime is 6497124198247. The reversal of 6497124198218 is 8128914217946.

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

It can be written as a sum of positive squares in only one way, i.e., 5594629898209 + 902494300009 = 2365297^2 + 949997^2 .

It is not an unprimeable number, because it can be changed into a prime (6497124198217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1624281049553 + ... + 1624281049556.

Almost surely, 2^{6497124198218} is an apocalyptic number.

6497124198218 is a deficient number, since it is larger than the sum of its proper divisors (3248562099112).

6497124198218 is a wasteful number, since it uses less digits than its factorization.

6497124198218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3248562099111.

The product of its digits is 13934592, while the sum is 62.

The spelling of 6497124198218 in words is "six trillion, four hundred ninety-seven billion, one hundred twenty-four million, one hundred ninety-eight thousand, two hundred eighteen".