53378268817 has 2 divisors, whose sum is σ = 53378268818. Its totient is φ = 53378268816.

The previous prime is 53378268787. The next prime is 53378268841. The reversal of 53378268817 is 71886287335.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37857095761 + 15521173056 = 194569^2 + 124584^2 .

It is a cyclic number.

It is not a de Polignac number, because 53378268817 - 2¹¹ = 53378266769 is a prime.

It is not a weakly prime, because it can be changed into another prime (53378268847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26689134408 + 26689134409.

It is an arithmetic number, because the mean of its divisors is an integer number (26689134409).

Almost surely, 2^53378268817 is an apocalyptic number.

It is an amenable number.

53378268817 is a deficient number, since it is larger than the sum of its proper divisors (1).

53378268817 is an equidigital number, since it uses as much as digits as its factorization.

53378268817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13547520, while the sum is 58.

The spelling of 53378268817 in words is "fifty-three billion, three hundred seventy-eight million, two hundred sixty-eight thousand, eight hundred seventeen".