2821906890556 has 96 divisors (see below), whose sum is σ = 5400693446400. Its totient is φ = 1282422274560.

The previous prime is 2821906890499. The next prime is 2821906890557. The reversal of 2821906890556 is 6550986091282.

2821906890556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2821906890494 and 2821906890503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2821906890557) 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, 426331015 + ... + 426337633.

It is an arithmetic number, because the mean of its divisors is an integer number (56257223400).

Almost surely, 2^{2821906890556} is an apocalyptic number.

2821906890556 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2821906890556 is a deficient number, since it is larger than the sum of its proper divisors (2578786555844).

2821906890556 is a wasteful number, since it uses less digits than its factorization.

2821906890556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7259 (or 7257 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 61.

The spelling of 2821906890556 in words is "two trillion, eight hundred twenty-one billion, nine hundred six million, eight hundred ninety thousand, five hundred fifty-six".