4812782005021 has 6 divisors (see below), whose sum is σ = 4826454696410. Its totient is φ = 4799147937408.

The previous prime is 4812782004977. The next prime is 4812782005033. The reversal of 4812782005021 is 1205002872184.

It can be written as a sum of positive squares in 3 ways, for example, as 816021348921 + 3996760656100 = 903339^2 + 1999190^2 .

It is not a de Polignac number, because 4812782005021 - 2³¹ = 4810634521373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4812782005061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19186926 + ... + 19436143.

Almost surely, 2^{4812782005021} is an apocalyptic number.

It is an amenable number.

4812782005021 is a deficient number, since it is larger than the sum of its proper divisors (13672691389).

4812782005021 is an frugal number, since it uses more digits than its factorization.

4812782005021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38623775 (or 38623422 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 40.

The spelling of 4812782005021 in words is "four trillion, eight hundred twelve billion, seven hundred eighty-two million, five thousand, twenty-one".