53146386217 has 2 divisors, whose sum is σ = 53146386218. Its totient is φ = 53146386216.

The previous prime is 53146386211. The next prime is 53146386247. The reversal of 53146386217 is 71268364135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53115959961 + 30426256 = 230469^2 + 5516^2 .

It is a cyclic number.

It is not a de Polignac number, because 53146386217 - 2¹⁹ = 53145861929 is a prime.

It is not a weakly prime, because it can be changed into another prime (53146386211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26573193108 + 26573193109.

It is an arithmetic number, because the mean of its divisors is an integer number (26573193109).

Almost surely, 2^53146386217 is an apocalyptic number.

It is an amenable number.

53146386217 is a deficient number, since it is larger than the sum of its proper divisors (1).

53146386217 is an equidigital number, since it uses as much as digits as its factorization.

53146386217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 46.

The spelling of 53146386217 in words is "fifty-three billion, one hundred forty-six million, three hundred eighty-six thousand, two hundred seventeen".