21726675776705 has 8 divisors (see below), whose sum is σ = 26120203192104. Its totient is φ = 17349212448000.

The previous prime is 21726675776671. The next prime is 21726675776711. The reversal of 21726675776705 is 50767757662712.

It can be written as a sum of positive squares in 4 ways, for example, as 6624817072384 + 15101858704321 = 2573872^2 + 3886111^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21726675776705 - 2¹⁸ = 21726675514561 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4016018696 + ... + 4016024105.

It is an arithmetic number, because the mean of its divisors is an integer number (3265025399013).

Almost surely, 2^{21726675776705} is an apocalyptic number.

It is an amenable number.

21726675776705 is a deficient number, since it is larger than the sum of its proper divisors (4393527415399).

21726675776705 is an equidigital number, since it uses as much as digits as its factorization.

21726675776705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8032043347.

The product of its (nonzero) digits is 363031200, while the sum is 68.

The spelling of 21726675776705 in words is "twenty-one trillion, seven hundred twenty-six billion, six hundred seventy-five million, seven hundred seventy-six thousand, seven hundred five".