853605054397 has 2 divisors, whose sum is σ = 853605054398. Its totient is φ = 853605054396.

The previous prime is 853605054383. The next prime is 853605054413. The reversal of 853605054397 is 793450506358.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 839836613476 + 13768440921 = 916426^2 + 117339^2 .

It is a cyclic number.

It is not a de Polignac number, because 853605054397 - 2¹⁹ = 853604530109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (853605054307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426802527198 + 426802527199.

It is an arithmetic number, because the mean of its divisors is an integer number (426802527199).

Almost surely, 2^853605054397 is an apocalyptic number.

It is an amenable number.

853605054397 is a deficient number, since it is larger than the sum of its proper divisors (1).

853605054397 is an equidigital number, since it uses as much as digits as its factorization.

853605054397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608000, while the sum is 55.

The spelling of 853605054397 in words is "eight hundred fifty-three billion, six hundred five million, fifty-four thousand, three hundred ninety-seven".