68202342409 has 2 divisors, whose sum is σ = 68202342410. Its totient is φ = 68202342408.

The previous prime is 68202342343. The next prime is 68202342413. The reversal of 68202342409 is 90424320286.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65829191184 + 2373151225 = 256572^2 + 48715^2 .

It is a cyclic number.

It is not a de Polignac number, because 68202342409 - 2¹¹ = 68202340361 is a prime.

It is not a weakly prime, because it can be changed into another prime (68202742409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34101171204 + 34101171205.

It is an arithmetic number, because the mean of its divisors is an integer number (34101171205).

Almost surely, 2^68202342409 is an apocalyptic number.

It is an amenable number.

68202342409 is a deficient number, since it is larger than the sum of its proper divisors (1).

68202342409 is an equidigital number, since it uses as much as digits as its factorization.

68202342409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 68202342409 in words is "sixty-eight billion, two hundred two million, three hundred forty-two thousand, four hundred nine".