855321369293 has 2 divisors, whose sum is σ = 855321369294. Its totient is φ = 855321369292.

The previous prime is 855321369197. The next prime is 855321369307. The reversal of 855321369293 is 392963123558.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 838253775844 + 17067593449 = 915562^2 + 130643^2 .

It is a cyclic number.

It is not a de Polignac number, because 855321369293 - 2⁸ = 855321369037 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (855321365293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427660684646 + 427660684647.

It is an arithmetic number, because the mean of its divisors is an integer number (427660684647).

Almost surely, 2^855321369293 is an apocalyptic number.

It is an amenable number.

855321369293 is a deficient number, since it is larger than the sum of its proper divisors (1).

855321369293 is an equidigital number, since it uses as much as digits as its factorization.

855321369293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10497600, while the sum is 56.

The spelling of 855321369293 in words is "eight hundred fifty-five billion, three hundred twenty-one million, three hundred sixty-nine thousand, two hundred ninety-three".