855386232473 has 2 divisors, whose sum is σ = 855386232474. Its totient is φ = 855386232472.

The previous prime is 855386232461. The next prime is 855386232487. The reversal of 855386232473 is 374232683558.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 479435762569 + 375950469904 = 692413^2 + 613148^2 .

It is a cyclic number.

It is not a de Polignac number, because 855386232473 - 2²⁰ = 855385183897 is a prime.

It is not a weakly prime, because it can be changed into another prime (855386232413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427693116236 + 427693116237.

It is an arithmetic number, because the mean of its divisors is an integer number (427693116237).

Almost surely, 2^855386232473 is an apocalyptic number.

It is an amenable number.

855386232473 is a deficient number, since it is larger than the sum of its proper divisors (1).

855386232473 is an equidigital number, since it uses as much as digits as its factorization.

855386232473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29030400, while the sum is 56.

The spelling of 855386232473 in words is "eight hundred fifty-five billion, three hundred eighty-six million, two hundred thirty-two thousand, four hundred seventy-three".