65681620025053 has 2 divisors, whose sum is σ = 65681620025054. Its totient is φ = 65681620025052.

The previous prime is 65681620025029. The next prime is 65681620025111. The reversal of 65681620025053 is 35052002618656.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51146212148964 + 14535407876089 = 7151658^2 + 3812533^2 .

It is a cyclic number.

It is not a de Polignac number, because 65681620025053 - 2⁹ = 65681620024541 is a prime.

It is a super-4 number, since 4×65681620025053⁴ (a number of 56 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65681620024988 and 65681620025006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65681620025453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32840810012526 + 32840810012527.

It is an arithmetic number, because the mean of its divisors is an integer number (32840810012527).

Almost surely, 2^{65681620025053} is an apocalyptic number.

It is an amenable number.

65681620025053 is a deficient number, since it is larger than the sum of its proper divisors (1).

65681620025053 is an equidigital number, since it uses as much as digits as its factorization.

65681620025053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592000, while the sum is 49.

The spelling of 65681620025053 in words is "sixty-five trillion, six hundred eighty-one billion, six hundred twenty million, twenty-five thousand, fifty-three".