1028888488889 has 12 divisors (see below), whose sum is σ = 1113103026000. Its totient is φ = 948392210448.

The previous prime is 1028888488883. The next prime is 1028888488909. The reversal of 1028888488889 is 9888848888201.

It is not a de Polignac number, because 1028888488889 - 2³² = 1024593521593 is a prime.

It is a super-2 number, since 2×1028888488889² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1028888488883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19751939 + ... + 19803960.

It is an arithmetic number, because the mean of its divisors is an integer number (92758585500).

Almost surely, 2^{1028888488889} is an apocalyptic number.

1028888488889 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1028888488889 is a deficient number, since it is larger than the sum of its proper divisors (84214537111).

1028888488889 is an equidigital number, since it uses as much as digits as its factorization.

1028888488889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39555992 (or 39555955 counting only the distinct ones).

The product of its (nonzero) digits is 1207959552, while the sum is 80.

The spelling of 1028888488889 in words is "one trillion, twenty-eight billion, eight hundred eighty-eight million, four hundred eighty-eight thousand, eight hundred eighty-nine".