1578285502556 has 12 divisors (see below), whose sum is σ = 3156571005168. Its totient is φ = 676408072512.

The previous prime is 1578285502553. The next prime is 1578285502567. The reversal of 1578285502556 is 6552055828751.

1578285502556 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1578285502495 and 1578285502504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1578285502553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28183669661 + ... + 28183669716.

It is an arithmetic number, because the mean of its divisors is an integer number (263047583764).

Almost surely, 2^{1578285502556} is an apocalyptic number.

It is an amenable number.

1578285502556 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1578285502556 is a wasteful number, since it uses less digits than its factorization.

1578285502556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56367339388 (or 56367339386 counting only the distinct ones).

The product of its (nonzero) digits is 33600000, while the sum is 59.

The spelling of 1578285502556 in words is "one trillion, five hundred seventy-eight billion, two hundred eighty-five million, five hundred two thousand, five hundred fifty-six".