53365923217 has 2 divisors, whose sum is σ = 53365923218. Its totient is φ = 53365923216.

The previous prime is 53365923209. The next prime is 53365923241. The reversal of 53365923217 is 71232956335.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46752818176 + 6613105041 = 216224^2 + 81321^2 .

It is a cyclic number.

It is not a de Polignac number, because 53365923217 - 2³ = 53365923209 is a prime.

It is not a weakly prime, because it can be changed into another prime (53365926217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26682961608 + 26682961609.

It is an arithmetic number, because the mean of its divisors is an integer number (26682961609).

Almost surely, 2^53365923217 is an apocalyptic number.

It is an amenable number.

53365923217 is a deficient number, since it is larger than the sum of its proper divisors (1).

53365923217 is an equidigital number, since it uses as much as digits as its factorization.

53365923217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1020600, while the sum is 46.

The spelling of 53365923217 in words is "fifty-three billion, three hundred sixty-five million, nine hundred twenty-three thousand, two hundred seventeen".