108998891563 has 2 divisors, whose sum is σ = 108998891564. Its totient is φ = 108998891562.

The previous prime is 108998891557. The next prime is 108998891567. The reversal of 108998891563 is 365198899801.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 108998891563 - 2⁹ = 108998891051 is a prime.

It is not a weakly prime, because it can be changed into another prime (108998891567) 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, 54499445781 + 54499445782.

It is an arithmetic number, because the mean of its divisors is an integer number (54499445782).

Almost surely, 2^108998891563 is an apocalyptic number.

108998891563 is a deficient number, since it is larger than the sum of its proper divisors (1).

108998891563 is an equidigital number, since it uses as much as digits as its factorization.

108998891563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33592320, while the sum is 67.

The spelling of 108998891563 in words is "one hundred eight billion, nine hundred ninety-eight million, eight hundred ninety-one thousand, five hundred sixty-three".