6697938397966 has 8 divisors (see below), whose sum is σ = 10174083642720. Its totient is φ = 3306577183728.

The previous prime is 6697938397961. The next prime is 6697938397979.

6697938397966 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6697938397961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21196007431 + ... + 21196007746.

It is an arithmetic number, because the mean of its divisors is an integer number (1271760455340).

Almost surely, 2^{6697938397966} is an apocalyptic number.

6697938397966 is a deficient number, since it is larger than the sum of its proper divisors (3476145244754).

6697938397966 is a wasteful number, since it uses less digits than its factorization.

6697938397966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42392015258.

The product of its digits is 29998781568, while the sum is 88.

The spelling of 6697938397966 in words is "six trillion, six hundred ninety-seven billion, nine hundred thirty-eight million, three hundred ninety-seven thousand, nine hundred sixty-six".