2065121513641 has 2 divisors, whose sum is σ = 2065121513642. Its totient is φ = 2065121513640.

The previous prime is 2065121513629. The next prime is 2065121513669. The reversal of 2065121513641 is 1463151215602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1045667811241 + 1019453702400 = 1022579^2 + 1009680^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2065121513641 is a prime.

It is a super-2 number, since 2×2065121513641² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2065121513641.

It is not a weakly prime, because it can be changed into another prime (2065121513621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1032560756820 + 1032560756821.

It is an arithmetic number, because the mean of its divisors is an integer number (1032560756821).

Almost surely, 2^{2065121513641} is an apocalyptic number.

It is an amenable number.

2065121513641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2065121513641 is an equidigital number, since it uses as much as digits as its factorization.

2065121513641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 2065121513641 in words is "two trillion, sixty-five billion, one hundred twenty-one million, five hundred thirteen thousand, six hundred forty-one".