855515328859 has 2 divisors, whose sum is σ = 855515328860. Its totient is φ = 855515328858.

The previous prime is 855515328809. The next prime is 855515328911. The reversal of 855515328859 is 958823515558.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 855515328859 - 2²¹ = 855513231707 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 855515328859.

It is not a weakly prime, because it can be changed into another prime (855515328809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427757664429 + 427757664430.

It is an arithmetic number, because the mean of its divisors is an integer number (427757664430).

Almost surely, 2^855515328859 is an apocalyptic number.

855515328859 is a deficient number, since it is larger than the sum of its proper divisors (1).

855515328859 is an equidigital number, since it uses as much as digits as its factorization.

855515328859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400000, while the sum is 64.

The spelling of 855515328859 in words is "eight hundred fifty-five billion, five hundred fifteen million, three hundred twenty-eight thousand, eight hundred fifty-nine".