20116761620393 has 2 divisors, whose sum is σ = 20116761620394. Its totient is φ = 20116761620392.

The previous prime is 20116761620381. The next prime is 20116761620503. The reversal of 20116761620393 is 39302616761102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14377656236944 + 5739105383449 = 3791788^2 + 2395643^2 .

It is a cyclic number.

It is not a de Polignac number, because 20116761620393 - 2²² = 20116757426089 is a prime.

It is not a weakly prime, because it can be changed into another prime (20116761620303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10058380810196 + 10058380810197.

It is an arithmetic number, because the mean of its divisors is an integer number (10058380810197).

Almost surely, 2^{20116761620393} is an apocalyptic number.

It is an amenable number.

20116761620393 is a deficient number, since it is larger than the sum of its proper divisors (1).

20116761620393 is an equidigital number, since it uses as much as digits as its factorization.

20116761620393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 47.

The spelling of 20116761620393 in words is "twenty trillion, one hundred sixteen billion, seven hundred sixty-one million, six hundred twenty thousand, three hundred ninety-three".