2821294473656 has 16 divisors (see below), whose sum is σ = 5568344356200. Its totient is φ = 1336402645344.

The previous prime is 2821294473617. The next prime is 2821294473677. The reversal of 2821294473656 is 6563744921282.

It is a junction number, because it is equal to n+sod(n) for n = 2821294473595 and 2821294473604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9280573775 + ... + 9280574078.

Almost surely, 2^{2821294473656} is an apocalyptic number.

It is an amenable number.

2821294473656 is a deficient number, since it is larger than the sum of its proper divisors (2747049882544).

2821294473656 is a wasteful number, since it uses less digits than its factorization.

2821294473656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18561147878 (or 18561147874 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 59.

The spelling of 2821294473656 in words is "two trillion, eight hundred twenty-one billion, two hundred ninety-four million, four hundred seventy-three thousand, six hundred fifty-six".