20116747489 has 2 divisors, whose sum is σ = 20116747490. Its totient is φ = 20116747488.

The previous prime is 20116747481. The next prime is 20116747517. The reversal of 20116747489 is 98474761102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20111494225 + 5253264 = 141815^2 + 2292^2 .

It is a cyclic number.

It is not a de Polignac number, because 20116747489 - 2³ = 20116747481 is a prime.

It is not a weakly prime, because it can be changed into another prime (20116747481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10058373744 + 10058373745.

It is an arithmetic number, because the mean of its divisors is an integer number (10058373745).

Almost surely, 2^20116747489 is an apocalyptic number.

It is an amenable number.

20116747489 is a deficient number, since it is larger than the sum of its proper divisors (1).

20116747489 is an equidigital number, since it uses as much as digits as its factorization.

20116747489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 49.

The spelling of 20116747489 in words is "twenty billion, one hundred sixteen million, seven hundred forty-seven thousand, four hundred eighty-nine".