19881416063 has 2 divisors, whose sum is σ = 19881416064. Its totient is φ = 19881416062.

The previous prime is 19881416017. The next prime is 19881416083. The reversal of 19881416063 is 36061418891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19881416063 - 2³⁴ = 2701546879 is a prime.

It is a super-2 number, since 2×19881416063² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19881415999 and 19881416017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19881416083) 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, 9940708031 + 9940708032.

It is an arithmetic number, because the mean of its divisors is an integer number (9940708032).

Almost surely, 2^19881416063 is an apocalyptic number.

19881416063 is a deficient number, since it is larger than the sum of its proper divisors (1).

19881416063 is an equidigital number, since it uses as much as digits as its factorization.

19881416063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 47.

The spelling of 19881416063 in words is "nineteen billion, eight hundred eighty-one million, four hundred sixteen thousand, sixty-three".