2830278065861 has 2 divisors, whose sum is σ = 2830278065862. Its totient is φ = 2830278065860.

The previous prime is 2830278065851. The next prime is 2830278065903. The reversal of 2830278065861 is 1685608720382.

It is a happy number.

2830278065861 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2457071925025 + 373206140836 = 1567505^2 + 610906^2 .

It is a cyclic number.

It is not a de Polignac number, because 2830278065861 - 2¹⁴ = 2830278049477 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2830278065797 and 2830278065806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2830278065801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1415139032930 + 1415139032931.

It is an arithmetic number, because the mean of its divisors is an integer number (1415139032931).

Almost surely, 2^{2830278065861} is an apocalyptic number.

It is an amenable number.

2830278065861 is a deficient number, since it is larger than the sum of its proper divisors (1).

2830278065861 is an equidigital number, since it uses as much as digits as its factorization.

2830278065861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7741440, while the sum is 56.

The spelling of 2830278065861 in words is "two trillion, eight hundred thirty billion, two hundred seventy-eight million, sixty-five thousand, eight hundred sixty-one".