21710660579 has 2 divisors, whose sum is σ = 21710660580. Its totient is φ = 21710660578.

The previous prime is 21710660567. The next prime is 21710660591. The reversal of 21710660579 is 97506601712.

It is a balanced prime because it is at equal distance from previous prime (21710660567) and next prime (21710660591).

It is a cyclic number.

It is not a de Polignac number, because 21710660579 - 2⁴ = 21710660563 is a prime.

It is not a weakly prime, because it can be changed into another prime (21710660599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10855330289 + 10855330290.

It is an arithmetic number, because the mean of its divisors is an integer number (10855330290).

Almost surely, 2^21710660579 is an apocalyptic number.

21710660579 is a deficient number, since it is larger than the sum of its proper divisors (1).

21710660579 is an equidigital number, since it uses as much as digits as its factorization.

21710660579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 44.

The spelling of 21710660579 in words is "twenty-one billion, seven hundred ten million, six hundred sixty thousand, five hundred seventy-nine".