6697657433389 has 4 divisors (see below), whose sum is σ = 7212861851356. Its totient is φ = 6182453015424.

The previous prime is 6697657433387. The next prime is 6697657433413. The reversal of 6697657433389 is 9833347567966.

6697657433389 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 1872860675625 + 4824796757764 = 1368525^2 + 2196542^2 .

It is a cyclic number.

It is not a de Polignac number, because 6697657433389 - 2¹ = 6697657433387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6697657433387) 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, 257602208964 + ... + 257602208989.

It is an arithmetic number, because the mean of its divisors is an integer number (1803215462839).

Almost surely, 2^{6697657433389} is an apocalyptic number.

It is an amenable number.

6697657433389 is a deficient number, since it is larger than the sum of its proper divisors (515204417967).

6697657433389 is a wasteful number, since it uses less digits than its factorization.

6697657433389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515204417966.

The product of its digits is 3703553280, while the sum is 76.

The spelling of 6697657433389 in words is "six trillion, six hundred ninety-seven billion, six hundred fifty-seven million, four hundred thirty-three thousand, three hundred eighty-nine".