53257617120769 has 2 divisors, whose sum is σ = 53257617120770. Its totient is φ = 53257617120768.

The previous prime is 53257617120749. The next prime is 53257617120797. The reversal of 53257617120769 is 96702171675235.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39244423824369 + 14013193296400 = 6264537^2 + 3743420^2 .

It is a cyclic number.

It is not a de Polignac number, because 53257617120769 - 2⁷ = 53257617120641 is a prime.

It is a super-2 number, since 2×53257617120769² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53257617120749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26628808560384 + 26628808560385.

It is an arithmetic number, because the mean of its divisors is an integer number (26628808560385).

Almost surely, 2^{53257617120769} is an apocalyptic number.

It is an amenable number.

53257617120769 is a deficient number, since it is larger than the sum of its proper divisors (1).

53257617120769 is an equidigital number, since it uses as much as digits as its factorization.

53257617120769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33339600, while the sum is 61.

The spelling of 53257617120769 in words is "fifty-three trillion, two hundred fifty-seven billion, six hundred seventeen million, one hundred twenty thousand, seven hundred sixty-nine".