53617728646441 has 2 divisors, whose sum is σ = 53617728646442. Its totient is φ = 53617728646440.

The previous prime is 53617728646439. The next prime is 53617728646451. The reversal of 53617728646441 is 14464682771635.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53069986557225 + 547742089216 = 7284915^2 + 740096^2 .

It is a cyclic number.

It is not a de Polignac number, because 53617728646441 - 2¹ = 53617728646439 is a prime.

Together with 53617728646439, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (53617728646451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26808864323220 + 26808864323221.

It is an arithmetic number, because the mean of its divisors is an integer number (26808864323221).

Almost surely, 2^{53617728646441} is an apocalyptic number.

It is an amenable number.

53617728646441 is a deficient number, since it is larger than the sum of its proper divisors (1).

53617728646441 is an equidigital number, since it uses as much as digits as its factorization.

53617728646441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162570240, while the sum is 64.

The spelling of 53617728646441 in words is "fifty-three trillion, six hundred seventeen billion, seven hundred twenty-eight million, six hundred forty-six thousand, four hundred forty-one".