21064087411 has 2 divisors, whose sum is σ = 21064087412. Its totient is φ = 21064087410.

The previous prime is 21064087399. The next prime is 21064087441. The reversal of 21064087411 is 11478046012.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21064087411 - 2⁹ = 21064086899 is a prime.

It is not a weakly prime, because it can be changed into another prime (21064087441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10532043705 + 10532043706.

It is an arithmetic number, because the mean of its divisors is an integer number (10532043706).

Almost surely, 2^21064087411 is an apocalyptic number.

21064087411 is a deficient number, since it is larger than the sum of its proper divisors (1).

21064087411 is an equidigital number, since it uses as much as digits as its factorization.

21064087411 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 34.

The spelling of 21064087411 in words is "twenty-one billion, sixty-four million, eighty-seven thousand, four hundred eleven".