20116555603 has 2 divisors, whose sum is σ = 20116555604. Its totient is φ = 20116555602.

The previous prime is 20116555597. The next prime is 20116555607. The reversal of 20116555603 is 30655561102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20116555603 - 2¹³ = 20116547411 is a prime.

It is not a weakly prime, because it can be changed into another prime (20116555607) 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, 10058277801 + 10058277802.

It is an arithmetic number, because the mean of its divisors is an integer number (10058277802).

Almost surely, 2^20116555603 is an apocalyptic number.

20116555603 is a deficient number, since it is larger than the sum of its proper divisors (1).

20116555603 is an equidigital number, since it uses as much as digits as its factorization.

20116555603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27000, while the sum is 34.

The spelling of 20116555603 in words is "twenty billion, one hundred sixteen million, five hundred fifty-five thousand, six hundred three".