20582756717 has 2 divisors, whose sum is σ = 20582756718. Its totient is φ = 20582756716.

The previous prime is 20582756669. The next prime is 20582756731. The reversal of 20582756717 is 71765728502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20350163716 + 232593001 = 142654^2 + 15251^2 .

It is a cyclic number.

It is not a de Polignac number, because 20582756717 - 2⁶ = 20582756653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20582756767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10291378358 + 10291378359.

It is an arithmetic number, because the mean of its divisors is an integer number (10291378359).

Almost surely, 2^20582756717 is an apocalyptic number.

It is an amenable number.

20582756717 is a deficient number, since it is larger than the sum of its proper divisors (1).

20582756717 is an equidigital number, since it uses as much as digits as its factorization.

20582756717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1646400, while the sum is 50.

The spelling of 20582756717 in words is "twenty billion, five hundred eighty-two million, seven hundred fifty-six thousand, seven hundred seventeen".