854865042461 has 2 divisors, whose sum is σ = 854865042462. Its totient is φ = 854865042460.

The previous prime is 854865042407. The next prime is 854865042491. The reversal of 854865042461 is 164240568458.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 704936556025 + 149928486436 = 839605^2 + 387206^2 .

It is a cyclic number.

It is not a de Polignac number, because 854865042461 - 2¹⁴ = 854865026077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (854865042491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427432521230 + 427432521231.

It is an arithmetic number, because the mean of its divisors is an integer number (427432521231).

Almost surely, 2^854865042461 is an apocalyptic number.

It is an amenable number.

854865042461 is a deficient number, since it is larger than the sum of its proper divisors (1).

854865042461 is an equidigital number, since it uses as much as digits as its factorization.

854865042461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7372800, while the sum is 53.

The spelling of 854865042461 in words is "eight hundred fifty-four billion, eight hundred sixty-five million, forty-two thousand, four hundred sixty-one".