855943097959 has 2 divisors, whose sum is σ = 855943097960. Its totient is φ = 855943097958.

The previous prime is 855943097951. The next prime is 855943098011. The reversal of 855943097959 is 959790349558.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 855943097959 - 2³ = 855943097951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 855943097891 and 855943097900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (855943097951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427971548979 + 427971548980.

It is an arithmetic number, because the mean of its divisors is an integer number (427971548980).

Almost surely, 2^855943097959 is an apocalyptic number.

855943097959 is a deficient number, since it is larger than the sum of its proper divisors (1).

855943097959 is an equidigital number, since it uses as much as digits as its factorization.

855943097959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 551124000, while the sum is 73.

The spelling of 855943097959 in words is "eight hundred fifty-five billion, nine hundred forty-three million, ninety-seven thousand, nine hundred fifty-nine".