1287030729600 has 2304 divisors, whose sum is σ = 6069319872000. Its totient is φ = 260576870400.

The previous prime is 1287030729599. The next prime is 1287030729629. The reversal of 1287030729600 is 69270307821.

1287030729600 is a `hidden beast` number, since 1 + 2 + 8 + 7 + 0 + 30 + 7 + 2 + 9 + 600 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 3146774196 + ... + 3146774604.

Almost surely, 2^{1287030729600} is an apocalyptic number.

1287030729600 is a gapful number since it is divisible by the number (10) 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 1287030729600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3034659936000).

1287030729600 is an abundant number, since it is smaller than the sum of its proper divisors (4782289142400).

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

1287030729600 is a wasteful number, since it uses less digits than its factorization.

1287030729600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514 (or 480 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 1287030729600 in words is "one trillion, two hundred eighty-seven billion, thirty million, seven hundred twenty-nine thousand, six hundred".