411721821799 has 4 divisors (see below), whose sum is σ = 412400112064. Its totient is φ = 411043531536.

The previous prime is 411721821793. The next prime is 411721821803. The reversal of 411721821799 is 997128127114.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 411721821799 - 2¹⁹ = 411721297511 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 (411721821793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 339144222 + ... + 339145435.

It is an arithmetic number, because the mean of its divisors is an integer number (103100028016).

Almost surely, 2^411721821799 is an apocalyptic number.

411721821799 is a deficient number, since it is larger than the sum of its proper divisors (678290265).

411721821799 is an equidigital number, since it uses as much as digits as its factorization.

411721821799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678290264.

The product of its digits is 508032, while the sum is 52.

The spelling of 411721821799 in words is "four hundred eleven billion, seven hundred twenty-one million, eight hundred twenty-one thousand, seven hundred ninety-nine".