1283045555568 has 160 divisors (see below), whose sum is σ = 3919462709760. Its totient is φ = 353871221760.

The previous prime is 1283045555567. The next prime is 1283045555581. The reversal of 1283045555568 is 8655555403821.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1283045555567) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62555971 + ... + 62576477.

It is an arithmetic number, because the mean of its divisors is an integer number (24496641936).

Almost surely, 2^{1283045555568} 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 1283045555568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1959731354880).

1283045555568 is an abundant number, since it is smaller than the sum of its proper divisors (2636417154192).

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

1283045555568 is a wasteful number, since it uses less digits than its factorization.

1283045555568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26975 (or 26969 counting only the distinct ones).

The product of its (nonzero) digits is 28800000, while the sum is 57.

The spelling of 1283045555568 in words is "one trillion, two hundred eighty-three billion, forty-five million, five hundred fifty-five thousand, five hundred sixty-eight".