83845311479 has 2 divisors, whose sum is σ = 83845311480. Its totient is φ = 83845311478.

The previous prime is 83845311457. The next prime is 83845311497. The reversal of 83845311479 is 97411354838.

Together with next prime (83845311497) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83845311479 - 2¹² = 83845307383 is a prime.

It is a super-3 number, since 3×83845311479³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 83845311479.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83845311779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41922655739 + 41922655740.

It is an arithmetic number, because the mean of its divisors is an integer number (41922655740).

Almost surely, 2^83845311479 is an apocalyptic number.

83845311479 is a deficient number, since it is larger than the sum of its proper divisors (1).

83845311479 is an equidigital number, since it uses as much as digits as its factorization.

83845311479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 53.

The spelling of 83845311479 in words is "eighty-three billion, eight hundred forty-five million, three hundred eleven thousand, four hundred seventy-nine".