1228806891416 has 64 divisors (see below), whose sum is σ = 2502515040480. Its totient is φ = 562290324480.

The previous prime is 1228806891401. The next prime is 1228806891439. The reversal of 1228806891416 is 6141986088221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11301551 + ... + 11409761.

Almost surely, 2^{1228806891416} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1228806891416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1251257520240).

1228806891416 is an abundant number, since it is smaller than the sum of its proper divisors (1273708149064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1228806891416 is a wasteful number, since it uses less digits than its factorization.

1228806891416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109164 (or 109160 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 56.

The spelling of 1228806891416 in words is "one trillion, two hundred twenty-eight billion, eight hundred six million, eight hundred ninety-one thousand, four hundred sixteen".