83845311457 has 2 divisors, whose sum is σ = 83845311458. Its totient is φ = 83845311456.

The previous prime is 83845311443. The next prime is 83845311479. The reversal of 83845311457 is 75411354838.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82458568336 + 1386743121 = 287156^2 + 37239^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83845311457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83845311457.

It is not a weakly prime, because it can be changed into another prime (83845311497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41922655728 + 41922655729.

It is an arithmetic number, because the mean of its divisors is an integer number (41922655729).

Almost surely, 2^83845311457 is an apocalyptic number.

It is an amenable number.

83845311457 is a deficient number, since it is larger than the sum of its proper divisors (1).

83845311457 is an equidigital number, since it uses as much as digits as its factorization.

83845311457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1612800, while the sum is 49.

The spelling of 83845311457 in words is "eighty-three billion, eight hundred forty-five million, three hundred eleven thousand, four hundred fifty-seven".