855477846247 has 2 divisors, whose sum is σ = 855477846248. Its totient is φ = 855477846246.

The previous prime is 855477846229. The next prime is 855477846253. The reversal of 855477846247 is 742648774558.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 855477846247 - 2¹⁵ = 855477813479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (855477346247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427738923123 + 427738923124.

It is an arithmetic number, because the mean of its divisors is an integer number (427738923124).

Almost surely, 2^855477846247 is an apocalyptic number.

855477846247 is a deficient number, since it is larger than the sum of its proper divisors (1).

855477846247 is an equidigital number, since it uses as much as digits as its factorization.

855477846247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 421478400, while the sum is 67.

The spelling of 855477846247 in words is "eight hundred fifty-five billion, four hundred seventy-seven million, eight hundred forty-six thousand, two hundred forty-seven".