6318642798209 has 24 divisors (see below), whose sum is σ = 7848996307200. Its totient is φ = 5060537022240.

The previous prime is 6318642798199. The next prime is 6318642798241. The reversal of 6318642798209 is 9028972468136.

It is a de Polignac number, because none of the positive numbers 2^k-6318642798209 is a prime.

It is a super-2 number, since 2×6318642798209² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6318642798269) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71675579 + ... + 71763680.

It is an arithmetic number, because the mean of its divisors is an integer number (327041512800).

Almost surely, 2^{6318642798209} is an apocalyptic number.

It is an amenable number.

6318642798209 is a deficient number, since it is larger than the sum of its proper divisors (1530353508991).

6318642798209 is a wasteful number, since it uses less digits than its factorization.

6318642798209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143439333 (or 143439326 counting only the distinct ones).

The product of its (nonzero) digits is 62705664, while the sum is 65.

The spelling of 6318642798209 in words is "six trillion, three hundred eighteen billion, six hundred forty-two million, seven hundred ninety-eight thousand, two hundred nine".