20775471713 has 2 divisors, whose sum is σ = 20775471714. Its totient is φ = 20775471712.

The previous prime is 20775471677. The next prime is 20775471751. The reversal of 20775471713 is 31717457702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11668968529 + 9106503184 = 108023^2 + 95428^2 .

It is a cyclic number.

It is not a de Polignac number, because 20775471713 - 2¹² = 20775467617 is a prime.

It is not a weakly prime, because it can be changed into another prime (20775471793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10387735856 + 10387735857.

It is an arithmetic number, because the mean of its divisors is an integer number (10387735857).

Almost surely, 2^20775471713 is an apocalyptic number.

It is an amenable number.

20775471713 is a deficient number, since it is larger than the sum of its proper divisors (1).

20775471713 is an equidigital number, since it uses as much as digits as its factorization.

20775471713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288120, while the sum is 44.

The spelling of 20775471713 in words is "twenty billion, seven hundred seventy-five million, four hundred seventy-one thousand, seven hundred thirteen".