821743411106 has 8 divisors (see below), whose sum is σ = 1237301866944. Its totient is φ = 409309455460.

The previous prime is 821743411103. The next prime is 821743411109. The reversal of 821743411106 is 601114347128.

It is an interprime number because it is at equal distance from previous prime (821743411103) and next prime (821743411109).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×821743411106² (a number of 25 digits) contains 22 as substring.

It is a pancake number, because a pancake can be divided into 821743411106 parts by 1281985 straight cuts.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 821743411106.

It is not an unprimeable number, because it can be changed into a prime (821743411103) 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, 781124390 + ... + 781125441.

It is an arithmetic number, because the mean of its divisors is an integer number (154662733368).

Almost surely, 2^821743411106 is an apocalyptic number.

821743411106 is a deficient number, since it is larger than the sum of its proper divisors (415558455838).

821743411106 is a wasteful number, since it uses less digits than its factorization.

821743411106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1562250096.

The product of its (nonzero) digits is 32256, while the sum is 38.

The spelling of 821743411106 in words is "eight hundred twenty-one billion, seven hundred forty-three million, four hundred eleven thousand, one hundred six".