84283379861 has 2 divisors, whose sum is σ = 84283379862. Its totient is φ = 84283379860.

The previous prime is 84283379813. The next prime is 84283379863. The reversal of 84283379861 is 16897338248.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73172955025 + 11110424836 = 270505^2 + 105406^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84283379861 is a prime.

Together with 84283379863, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84283379861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84283379863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42141689930 + 42141689931.

It is an arithmetic number, because the mean of its divisors is an integer number (42141689931).

Almost surely, 2^84283379861 is an apocalyptic number.

It is an amenable number.

84283379861 is a deficient number, since it is larger than the sum of its proper divisors (1).

84283379861 is an equidigital number, since it uses as much as digits as its factorization.

84283379861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13934592, while the sum is 59.

The spelling of 84283379861 in words is "eighty-four billion, two hundred eighty-three million, three hundred seventy-nine thousand, eight hundred sixty-one".