6688683837377 has 2 divisors, whose sum is σ = 6688683837378. Its totient is φ = 6688683837376.

The previous prime is 6688683837359. The next prime is 6688683837491. The reversal of 6688683837377 is 7737383868866.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4991184937216 + 1697498900161 = 2234096^2 + 1302881^2 .

It is a cyclic number.

It is not a de Polignac number, because 6688683837377 - 2²⁶ = 6688616728513 is a prime.

It is not a weakly prime, because it can be changed into another prime (6688683837317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3344341918688 + 3344341918689.

It is an arithmetic number, because the mean of its divisors is an integer number (3344341918689).

Almost surely, 2^{6688683837377} is an apocalyptic number.

It is an amenable number.

6688683837377 is a deficient number, since it is larger than the sum of its proper divisors (1).

6688683837377 is an equidigital number, since it uses as much as digits as its factorization.

6688683837377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8193540096, while the sum is 80.

The spelling of 6688683837377 in words is "six trillion, six hundred eighty-eight billion, six hundred eighty-three million, eight hundred thirty-seven thousand, three hundred seventy-seven".