69668444357 has 2 divisors, whose sum is σ = 69668444358. Its totient is φ = 69668444356.

The previous prime is 69668444353. The next prime is 69668444381. The reversal of 69668444357 is 75344486696.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65774809156 + 3893635201 = 256466^2 + 62399^2 .

It is a cyclic number.

It is not a de Polignac number, because 69668444357 - 2² = 69668444353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 69668444357.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69668444353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34834222178 + 34834222179.

It is an arithmetic number, because the mean of its divisors is an integer number (34834222179).

Almost surely, 2^69668444357 is an apocalyptic number.

It is an amenable number.

69668444357 is a deficient number, since it is larger than the sum of its proper divisors (1).

69668444357 is an equidigital number, since it uses as much as digits as its factorization.

69668444357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104509440, while the sum is 62.

The spelling of 69668444357 in words is "sixty-nine billion, six hundred sixty-eight million, four hundred forty-four thousand, three hundred fifty-seven".