20652770566037 has 2 divisors, whose sum is σ = 20652770566038. Its totient is φ = 20652770566036.

The previous prime is 20652770566007. The next prime is 20652770566039. The reversal of 20652770566037 is 73066507725602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18968106747121 + 1684663818916 = 4355239^2 + 1297946^2 .

It is a cyclic number.

It is not a de Polignac number, because 20652770566037 - 2⁸ = 20652770565781 is a prime.

Together with 20652770566039, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20652770566039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10326385283018 + 10326385283019.

It is an arithmetic number, because the mean of its divisors is an integer number (10326385283019).

Almost surely, 2^{20652770566037} is an apocalyptic number.

It is an amenable number.

20652770566037 is a deficient number, since it is larger than the sum of its proper divisors (1).

20652770566037 is an equidigital number, since it uses as much as digits as its factorization.

20652770566037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22226400, while the sum is 56.

The spelling of 20652770566037 in words is "twenty trillion, six hundred fifty-two billion, seven hundred seventy million, five hundred sixty-six thousand, thirty-seven".