688197135943 has 2 divisors, whose sum is σ = 688197135944. Its totient is φ = 688197135942.

The previous prime is 688197135889. The next prime is 688197135947. The reversal of 688197135943 is 349531791886.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 688197135943 - 2²⁹ = 687660265031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (688197135947) 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 as a sum of consecutive naturals, namely, 344098567971 + 344098567972.

It is an arithmetic number, because the mean of its divisors is an integer number (344098567972).

Almost surely, 2^688197135943 is an apocalyptic number.

688197135943 is a deficient number, since it is larger than the sum of its proper divisors (1).

688197135943 is an equidigital number, since it uses as much as digits as its factorization.

688197135943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39191040, while the sum is 64.

The spelling of 688197135943 in words is "six hundred eighty-eight billion, one hundred ninety-seven million, one hundred thirty-five thousand, nine hundred forty-three".