1280229101568 has 156 divisors (see below), whose sum is σ = 3709912016928. Its totient is φ = 425367060480.

The previous prime is 1280229101563. The next prime is 1280229101611. The reversal of 1280229101568 is 8651019220821.

1280229101568 is a `hidden beast` number, since 1 + 2 + 80 + 2 + 2 + 9 + 1 + 0 + 1 + 568 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280229101563) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11408871 + ... + 11520537.

It is an arithmetic number, because the mean of its divisors is an integer number (23781487288).

Almost surely, 2^{1280229101568} is an apocalyptic number.

1280229101568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1280229101568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1854956008464).

1280229101568 is an abundant number, since it is smaller than the sum of its proper divisors (2429682915360).

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

1280229101568 is a wasteful number, since it uses less digits than its factorization.

1280229101568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112008 (or 111983 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The spelling of 1280229101568 in words is "one trillion, two hundred eighty billion, two hundred twenty-nine million, one hundred one thousand, five hundred sixty-eight".