6897984436851 has 12 divisors (see below), whose sum is σ = 9770155581912. Its totient is φ = 4328147097088.

The previous prime is 6897984436829. The next prime is 6897984436867. The reversal of 6897984436851 is 1586344897986.

It is not a de Polignac number, because 6897984436851 - 2¹⁰ = 6897984435827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6897984436801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3978075510 + ... + 3978077243.

It is an arithmetic number, because the mean of its divisors is an integer number (814179631826).

Almost surely, 2^{6897984436851} is an apocalyptic number.

6897984436851 is a deficient number, since it is larger than the sum of its proper divisors (2872171145061).

6897984436851 is a wasteful number, since it uses less digits than its factorization.

6897984436851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7956152790 (or 7956152773 counting only the distinct ones).

The product of its digits is 2508226560, while the sum is 78.

The spelling of 6897984436851 in words is "six trillion, eight hundred ninety-seven billion, nine hundred eighty-four million, four hundred thirty-six thousand, eight hundred fifty-one".