21060065616041 has 2 divisors, whose sum is σ = 21060065616042. Its totient is φ = 21060065616040.

The previous prime is 21060065616011. The next prime is 21060065616047. The reversal of 21060065616041 is 14061656006012.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19913870550016 + 1146195066025 = 4462496^2 + 1070605^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21060065616041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21060065615986 and 21060065616004.

It is not a weakly prime, because it can be changed into another prime (21060065616047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10530032808020 + 10530032808021.

It is an arithmetic number, because the mean of its divisors is an integer number (10530032808021).

Almost surely, 2^{21060065616041} is an apocalyptic number.

It is an amenable number.

21060065616041 is a deficient number, since it is larger than the sum of its proper divisors (1).

21060065616041 is an equidigital number, since it uses as much as digits as its factorization.

21060065616041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 21060065616041 in words is "twenty-one trillion, sixty billion, sixty-five million, six hundred sixteen thousand, forty-one".